Just Bought a 65 Barracuda that sat for over 20yrs.

I'd replace the parts that ned to be, and run the rest until they are shot. Some new replacement parts these days are junk, the rest are a matter of luck. So points, condensor, ball joints, tie rod ends, wouldn't toss unless they fail or are out of spec. Heck even water pumps I've bought have been no good, How could someone screw that up you ask? Oh they can. Had one the inlet was flattened - on the side! I asked my parts guy if he had a D-shaped hose to match. OK. Brings in another one from his distributor and the impeller is hitting the housing. He's not happy - and that was A-1 Cardone...

Bleed the brakes. When looking for replacement brake parts, be aware the brake system saw a minor change in '68 and then the drum brake hardware and shoes changed in '69. So you want to match whichever system you go for so the adjusters turn the correct direction. The shoes are basically backward compatible but the hardware is not; its '68 and earlier or '69 and up.

Get the factory shop manual!