the question was about good parts so maybe ask people with clevos what parts they have as sometimes the cost has nothing to do with the quality.... after destroying a few or ten! i would recommend 4 bolt mains,a stud gurdle,grout fill to the welsh plugs,good oil system, and the rest well i think there isnt much in it everyone has there favourites i have AFDs a funnel web mk2, 850 hp holley ,comp cams solid roller, eagle H beams, kieth black nitros pistons, rollmaster timming chain, but an engine is more than just the sum of its parts......and when you gotta pick it up with a shovel it all weighs the same...

Scat stroker kit , chi 3V heads , funnel web intake manifold , ross race pistons , 850 mighty demon bary grant carbi , CSR electric watter pump, Magna fuel fuel pump , Crane solid roller cam, ARP stud kits , romac harmonic balancer, roller master premium timing chain , bottom end girdle ( if you have a girdle you dont need 4 bolt mains aswell) i would go the girdle over 4 bolt as its just as strong and costs bugger all compared to getting 4 bolt ...