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620 can be made with a lot smaller injector, IMO 6x.016" is the largest ANY vp will flow! anything over that is overkill for all vp trucks, unless there is spray involved!anyone know the numbers for 7x.018s? ive only seen em advertised as 300+hp from places
also the fella i got them from made 620 with them and a single s480 with an SOVP on his DD