302 heads

http://www.buschis-place.de/sbheads_diff_porting.htm
These guys will sell you ported heads outright, as will other outfits.
http://www.aeroheadracing.com/id6.html
http://www.hotrod.com/howto/113_0304_318_small_block_build/compression.html
hhttp://www.allpar.com/mopar/LA-V8-engine-head-
http://www.geocities.com/alwest_83/318.html
http://www.carcraft.com/techarticles/ccrp_0401_mopar_318_engine/index.html
http://www.off-road.com/trucks4x4/C...Article/detail/275132?contextCategoryId=45796