I have a k20z1 shortblock ... fresh rebuild.... here are the specs.. pics are included.
ACL Race Bearings * Graphite Coated*
K20a Pistons....(Skirts are coated)
K20z1 Crank (All Bearing Journals Are Graphite Coated)
Everything Has O miles Since Rebuild.....
Whole Rotational Assebley Has...