I think maybe the scope of this question is too large for a forum of this nature. I think that the replacement of a rear window is a pretty big job requiring a certain number of upholstery skills and techniques since it's stapled to the rear bow of the top frame as well as the tack strip at the back of the top well.
From what I've seen on this forum for the short time I've been a member, the consensus is generally to take it to a pro to have it done. However, since I've never been one to listen to good advice, I'm going to attempt mine myself (the whole top, not just the rear curtain) as well. The one and best online reference I've found so far is http://www.fordsunlimited.com/tech/Convertible.htm
Beyond that, I've purchased the shop manual for my 68 which has a section of convertible top repair and replacement with templates for bow positions. In addition, I purchased "Convertible Top Repair Manual" from Mustangs Unlimited and finally, there's a section in the back of "Mustang Restoration Handbook" with some convertible top repair/maintenance/replacement info.
Now, I realize that this pertains to 68 and not 70 but perhaps this information will be of some help to you for finding 70-specific information or perhaps 68 is similar enough to 70 to be of significant help. Best of luck to you!
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'68 convertible restoration "almost done". See Ol' Rusty's progress at 68Vert.BlogSpot.Com
Check with VMF member Dalarzo...I think that is his call sign. He sent me a manual he is putting together on convertible tops. It is very complete and it was free. He lives down under, but he visits here quite often. I think he plans on publishing that manual one day. He also installed his own top. I have done a few on other makes and models of vehicles, and I know others on this forum have chosen to do it their selves. If you have that DIY spirit, don't be afraid, even if you have to do it a couple of times, you'll still be $ ahead of paying someone else. Good Luck.
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Dirty Harry is a 1967 Mustang Convertible, 289 2v, automatic, soon to be 331 with Kenne Bell 2.2 Flowzilla Blowzilla, AODE. Next project is my Arizona 1966 Fastback...way down the line!
Some of my favorite phrases, and yes, they're mine.
Is it really bad luck, or poor planning?
Do something, or say nothing.
You can criticize all you want as long as you lend a hand.
Several of us have DIY new vert tops, including me.
Occasionally the top is replaced while saving the glass rear window.
The zipper is part of the window assembly not the top. Chances are the zipper halves
won't match up even on the same brand top. So replacing just the window is a real challange.
Richard in Australia is putting together an excellent summary of his research on vintage Mustang
vert tops and frames. His 68 vert is my 68's ideal! Also lime gold with black but to me Richard
is setting the standard!
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My '64 1/2 vert. Ordered May '64. D code 4 speed, handling package, caspian blue, accent group, Ford blue manual top.
'68 vert. driver. Owned since '77. C code AT, AC, PS, P disc B, PT lime gold, standard black interior and top. NOS RF fender and left quarter.New top and folding glass.
I have done a couple of tops and it is a royal PITA. The rear window is the first part to be installed, so if you want to replace the window only you have to unstaple the top from the rear bow. And probably remove it completely to get a tight fit.
The rear window needs to be installed first and tacked in place tight, then unzipped and removed to install the rest of the top.
try this site for some info. http://www.fordsunlimited.com/tech/Convertible.htm
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