fastpig

Does anybody know if any of the aftermarket racing fuel cells will fit in the stock location for a 72 vette ? I kinda doubt it, but thought I'd ask. I'm building a Big Block 427 for my vette which should make about 600 hp. The car is going to be used primarily for drag racing at the local strips. The stock tank only has the 3/8 feed line from the tank and I need to have 1/2" or -10 AN fitting. I might just have to have the original or a replacement tank sumped. Summit and Jeg's have a sump for doing this in their magazines which I may just go with. Any input appreciated.