The B&M converters are ok, they work good behind a GM, the PTC converters are really good for the money, I run a 9.5 4000 it cost me 385.00, I had a 11in PTC that would stall to 3000, my 60ft times with the 11in were 1.57, not bad for a 200.00 dollar conv. But it was behind a 451 with a lot of...