j10 needs overhaul

ok i bought a 74 j10 with an AMC 360 v8 and auto transmission. Its yellow with white trim. i want to kinda redo this truck, like lift kit, edelbrock headers and straight pipes etc. so far i have torn out the mouldy carpet and tried to change up points system. any pointers as far as engine upgrades? like kits that fix weak points in the trucks design?

if you can locate one a 401 would be a nice upgrade