Wanting to rebuild motor but confused...

You have a late model LA block with roller cam provision. I have the same setup, But I installed magnum heads and rockers. I bought pushrods and roller lifters for a 2001 magnum,they fit and suppy oil through pushrods. installed a comp 280 roller, mopar magnum valve springs, M1, 750 demon, stock crank and rods, Keith Black 168 flat top pistons for compression(under 10 to 1) With the KB pistons, you dont have to deck the block for zero deck quench. Pistons are 10 in the hole. piston to valve clearence is fine, over 150 on the exhaust, more on intake.cloyes db roller time set, melling hv pump and felpro gaskets. my 71 dart finally broke into the 12"s. I will never laugh at a 318 again.