best resources for parts for panle truck

[chris mc bride]

Im getting ready to start a restoration of 1969 panel truck. I figure it will need lower rear section of fenders, one or both rear corners replaced and I know part of floor boards.
I figure to do total makeover of interior with some major custom touches. As for power train I plan to retain the 454 thats in in now was originaly a 396 truck ,engine was repalced around 1975 or so. It has been rebuilt but was done more to granfathers taste. The engine is easy part,oh yea might need to mention Ive been building pro drag race engines for 20 years everything from 454 chevy to blown injected hemis making 3000hp.
The body work is hard part for me. But figure heck Ive done everything else including total fabrication of dozen or so harleys including custom tanks and fenders and maching all parts other than main engine parts.
I'm looking for info on parts like new body panels,new chrome and suspenion parts. I plan to do total restoration body off and redoing frame and all suspenion.
If you have good lead on aftermarket parts let me know. I have most of the usual bigger name leads but figure theres plenty of smaller dealers that have good product at fair price.