86-88 302 sefi swap is easiest and will give ya the most driveability, upgrade ability, and if you wanted, wouldn't cost much extra to upgrade to the 225HP h.o. setup from a mustang. Luckily with cross platform sharing between the fox chassis, almost anything that can be done to a mustang can be done to our cars pretty easily.
Check out coolcats.net and read up in the "modified" section, then come back for any questions or advice you may need.
Welcome to the forum, nice looking cars.
Hello :)
302/351W are the best swap candidates as far as V8 power goes on these cars.
Hello, welcome, and you have a matching cat, lol I did a 351w 5 speed in my 83 tbird