I have two BPE 4.250" cranks the first one is 468cid 4.250" x 4.185" R3, 59deg, W9 deal. Very fun to drive and it get about 15-16 mpg and all kinds of torque and it doesn't beat the valve train up. I put it together in 2014 for DW and the first pass on the motor it went 10.11 @135 through the exhaust on a concretive tune up in a 69 Dart. That motor is in the Cuda now. The second motor is still in the works short block is done, 4.250" x 4.200" R3 48deg deal, 6.320" carillo rods nice light pistons thin rings.