First, tape a piece of cardboard to the radiator with blue or green masking tape to protect it while you are fitting things, its already getting ginked up.
Try sanding the mating surfaces of your fan and water pump to see if there is crap keeping it from seating. Clean out the hole in the fan well, a drill with a small wire brush, otherwise emery cloth and fingers and implements of distruction. It looks to me like it should work if you can get it to seat. You are likely to be able to get away without the shroud since you have a 4 row and the shroud is likely not to sit right. It's supposed to end with half the fan in and half out, that shroud looks too deep for your application given where your fan will end up. As long as there is clearance to the radiator, at least a half inch or so between the fan and radiator you will be fine. You should be able to get on the road unless its 110 degrees and your running a/c. From there you can work it.
Seems like all your problems go away with the right radiator but it may be too late with scars on the fins.
IMHO (In my humble opinion) avoid an electric fan unless you are finally driven there, they require a lot of research to get the right one and a PITA to wire correctly. There is an overheat thread where someone put several different fans on trying to get it right. I personally think in a vintage car, there is nothing cooler than a mechanical fan on the front of the motor - old school but that's just me - old school!
What are you running for wheels, if they are stock and you are running an original diameter steering wheel, you should be fine with manual steering, just get used to turning while rolling and given your football training - you should be golden, same with power brakes. My car never had power anything and was driven by a little old lady for 35 years.
Just remember that when you grow old, you will always rue the day you sold that car and remember it fondly. You will come up to us owners and have fond memories in your eyes as you tell us in the gas station of your first Mustang. You may be one of the unfortunate souls that show up here trying to trace down their first Mustang. Seems like everyone with a little grey in their hair has a Mustang story that just needs to be told when they see one on the street - I'm jus say'n...
Welcome to the sickness/hobby, take your time and do things right once, going half asp gets you hood up on the side of the road with a big L on your forehead - enjoy the build, its part of the hobby, not just a means to an end...
Last edited by dobrostang; 09-09-2019 at 08:09 AM.