ok i had a few questions

Whats the best site for parts ..parts being ... Door knobs window knobs, visors, headliner, headlights, door panels and leaf springs.

Also I have a 74 but i want the bumpers of a 72-69 now if i find them for that year what mods whould i need to do to fit them to the 74 or would i have to actually switch out fenders and the whoel nine yards?

Try car-part.com for your parts. Sorry no idea about the parts swap.