Little things cost alot in these engines. I bought disassembled complete engine and it had everything. Only oil pan bolts and couple hoses vere missing.

I have JE pistons and very thin rings(0.035"). I just asked last week from JE some new rings, 1080usd a set!

I also assembled my friends R5P7, it had only 1 ring + oil ring and it was little thicker, not so expensive, about half the price. Looked like same from the outside than mine but everything was different inside.

As told earlier, little things cost a lot. I have 2.17" Del West titanium intake valves with 6mm stem. I dont even want to ask what they cost new.