The "how do I get a pulley further forward" problem is one that I will face on the meth monster project. I suspect the normal tricks of recessing the radiator support bar and flipping the frame won't work for me, as I want to run a gilmer pulley.
I'm thinking custom radiator, perhaps slightly wider with some subframe flap trimming. Paint the thing black, use original filler neck. Stelf.
Split the top and bottom tanks into two with an internal divider, as per Aussie Desert Coolers, so that you get a two-pass radiator (velocity increases, approach temperature on outlet can decrease, far better cooling). Either split the core into two with a big gap in the middle for the pulley (block off the little remaining tube stubs at the tanks), or cut a circular hole for the pulley (with clearance) and leave the (crimped off) tubes in place above/below the pulley. Loose a bit of cooling because of the tubes taken out, but get better cooling from 2-pass operation and perhaps wider core.
Still more thinking to do.
Cheers,
Harv
327 Chev EK wagon, original EK ute for Number 1 Daughter, an FB sedan meth monster project and a BB/MD grey motored FED.