@Rival14
As my name says, I have a 1977 Bronco Sport, one of the last to roll off the assembly line....
I bought mine used in 1995 and had a 1982 and 1990 before that. At the time I always wanted an early Bronco, seeing the famers drive them around my grangmothers home town growing up
Dont limit to yourself to those years, 1966-1977 was essentially the same with exception to engine, tanks, disc brakes, exterior lights and other things.
What you need to look out for is any prior work that was done to the Bronco, especially with the body panels. These things are known for rust, especailly those from the northeast and southeast, not made well to keep water and mud from causing rust.
When I bought mine, I was not that aware of the issues....I paid $3000 for it, 60K miles and it looked great until I started to take it apart to make repairs....found the previous owner bondoed over rust, the floor pans were not installed correctly and there was rust in a lot of places....
I started to do a complete frame off in the late 1990's and bascially stopped due to other priorities The Bronco sat in my garage until February of this year after I found a guy about 20 miles from me that does nothing but Bronco work....anyway we are in the middle of completing the Bronco and when I am done I will be north of $40K into the truck, but it will be done right and my way.
The downside is you have picked the worst time to buy a vintage Bronco like those looking for an AR....the prices are insane right now, you have to decide how much you want to spend and how much work you want to do for yourself....even the simple wiring harness for the Bronco is now $900 from the aftermarket. I just spent $500 on dash switches and temperature control cables. There is a 1977 on Ebay Motors that is selling for $99K
Mine is now on the body roteserie and will be completly seal welded, body putty everywhere and truck bed coated on the underside, the tub, under the hood....I have the original 302 V8, bored .030 over, Competition Performance Cam, Edelbrock 4BBL carb, ceramic headers and high performance ignition....
What ever you do, take it from me, do not jump too fast, look real good, look under the rocker panel, under the fenders, especially around the floor pans....
The 76, 77 years bascically have all of the best factory add ons, front disc brakes, dual fuel tanks....Dana 44 front, 9" Ford rear end (most of the years had Dana and 9" rear), and the J type transfer case, which I think is better than the T shifter transfer case.
Dont let the wrenching scare you....the target for my build is relaibility. The best thing about these is they are simple. Carburated engine, no O2 sensor, no codes, minimal electrical, transmission, T/C and drive system. We are going to focus on relaibility so that I can get in the Bronco and drive 300 miles or longer and not have any worries. We are chaging everyting that can leak: water pump, gaskets, P/S, all new differential gaskets, all new body gaskets and glass...
Sorry for the long rant, but you hit a good nerve when you asked this question and I like to write
Any way, please feel free to contact me if you have any questions....will be glad to help