These aftermaket kits, are virtually nothing more than a pack of gaskets. The original Carter kits consist of the gaskets, stepup piston, main metering screw, all springs, pump valve,check valve assembly, venttube, accel. pump, etc. Everything, except, the float assembly. I had a case of them at one time, but only have one left, & it's for the Carter Updraft model 447, for '39-'49 Chevy COE's.