Piston Choice is big Killer but.. That and Indy dealers can discount Indy products and Do! Replacement valve for Indy--25 places to get one and low prices--for a B1 maybe 4x as much? In my mind it all comes down to a hundred places to get pistons for Indy style builds and High $$ customs for the B1 and only a few places to get it from. I think you will find that most users of the B1 live close to the source, I remember first time I did big Mopar show at Norwalk track there were B1's on tons of cars that had traveled to that show / race all from around Koffels area. Great heads but most racers etc build as much as they can as cheap as they can and the nod goes to shelf stock pistons and Indys.
