If you want to use that 305, there is a stroker kit for one. It bring it to a 335 C.I.It includes a new stroker crank, KB pistons, street strip rings, CR1 rods, rod bearings, main bearings, gaskit set, for $599. You can get it from Powerhouse, 931 19th st, Backersfield, CA 93301. 661-861-0167.