If you plan on keeping the GT-40 upper have it powder coated it will look sweet. As for using clear the only clear I have foeund that works well is the Hi-Temp clear avaiable for The Eastwood Company (www.eastwoodcompany.com)a lot of people glass bead then clear it turns out nice, but you have to put it on nice and smooth and not to thick, multiple coats.
Kevin- just got a battery box welded up after I get it polished up I'll drop you some pic's if your still intrested
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My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98