I think I have found a combo that will work but would like a second (or third) opinion. 427t block, 4.5 crank, howards pistons no hrc4592 with a 6.535 rod. I know I have seen some 525's built with 6.8" rods and wonder would that be a better route, if so what piston pn would work with the 6.8's. my only real issue with the hrc4592 is they only seem to come in .100 over, which I am not to crazy about.