A '70 Seat back could have worked for a '69 provided the '69 latch hardware was all still useable. I swapped '69 seat back latch mechanisms into '70 Mach 1 Highbacks back in the 80's because I did not like the levers down low as it took two hands to operate (where you can unlatch & hinge forward a '69 with one hand). That and I wanted to keep my '69 to appear correct after the swap.
Just had to drill the 3 upper holes for the lever using the old low-back seat frames as guides and weld a nut down below for the lower latch bolt. Some extra washers were added to the lower latch bolt and it looks and works perfect.
'69 Seat Frames had some design flaws that caused them to crack or break at the hinge points (recall or TSB was issued, and I believe you can still get the repair kits from Ford) , so the '70 seat frames are a better starting point anyway.
Completely rebuilt these seats last summer and took some pics while they were apart.
1969 Calypso Coral 351W 4V 4-Spd Deluxe GT Hardtop (owned since '81)
2016 Guard 100A Ecoboost Fastback, 6-Spd MT, 641, 66W, 13D, 47AX O-T-T Stripes (ordered 2/11, dely 5/23, home 5/26/16)
2011 Kona Blue 3.7L V6 6-Spd MT Prem Coupe, MCA pkg & HID's (0-129k mi)
2004 Comp Orange, 1998 Chrome Yellow & 1994 Bright Blue V6 5-Spd Coupes (0-126k, 0-131k & 0-89k mi)
1979 Fairmont Futura w/'85 HO 5.0L built AOD 8.8 3.27T-Lok Quad Shks LX Rims SVO Seats&Console
Last edited by stangs-R-me; 07-17-2019 at 05:55 PM.