OK Wize,
When I build my next motor, it will have a KB aluminum block and B1 heads (original or MC?). I might stay small CID to use my existing Callies 4.250" crank, so 4.500" bore would be 540-541 CID.

But I need a better car to put that thing in! So it isn't going to happen in the next couple years. Maybe 2017... unless somebody buys mine sooner.

I keep changing my mind, either going back to 10.00 ET or bigger motor and lighter car... LOL

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1