I have an Indymaxx low deck thats currently ay 455 cubes. I rev to 8k with Ross pistons & Molnar crank n rods. Larry Smith ported heads, on pumpgas im running 9.0 @150mph. Ive beaten this block for 15 years, im thinking of building another @ 540 cubes, the extra 95 cubes has to run me into the low 8's. I'd be keen to hear of some bigger inch reliable builds on this size block too.