I'll throw my 2 centavos in here.
I like the 73-87 fenders on the 60-66 trucks, I think the lines, overall, work well, but can't get past the non-matching wheel opening lip.
Also, IMHO.... if a retrofit of the later fenders is going to be done, the wheel openings should be made to match.
I bought a 73-87 stepside bed for $250... they are anything but rare... literally 10's thousands of those beds were made.
I'd think they would be easy to find.
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Building Genuine Pontiac Firepowered cars and trucks for several decades.
Why Pontiac?? That's just me daring to be different.
Projects..
63 C10
Short
Wheel
Base fleetside (The Pro-Street) currently under reconstruction.
440CID 2X4 Pontiac