Holley 700 double pumper 4150, choke milled off, flows 750+cfm, mechanical secondary, 2 corner idle, brass threaded jet extensions with notched secondary float, totally disassembled and rebuilt with Holley rebuild kit, wet tested, non stick gaskets, power valve protector, 6.5 power valve, has holes drilled in butterflies for more air flow at idle, came off my 347 stoker with very large valve overlap, street or strip, thanks for looking!