I've got a 68 Nova that I'm throwing front disc brakes on next week and battery relocation to the back. With the $10K left over I need an engine, built rear, trans and all the little stuff like sub-frames, ds saftey loop, lkwd struts, etc. I'm looking at a built 383 crate motor $7k, throwing a summit 350 in it $700 and a Currie 9" rear with 456 grs $1500 and be around my 10K budget or should I go GM ZZ502 Crate $7,500K, summit 400 $800 and same Currie rear? I guess big block vs small block? I want something I can drive to the track rip some time slips and drive home. Thanks for any input!