Mopar R3 Block
This is kind of ridiculous.....if the OP doesn't have at hand 25k and up MINIMUM to fully complete whatever R3 block version it is AND have it run at a expected R3 platform would run at, plus the 48 degree would be much much better, siamese bore is a big plus and 9.2 or 9.6 deck are both fine.....then he should just go another route. You can build a nice street/strip low 500hp factory small block for probably half that money that is a very good, reliable piece that suits a lot of needs. Some people may chime in and say well back when I built my R3 engine I didn't spend that much and yeah well we are in the Biden Inflation Era now and not only has particularly high end race parts gone up multifold in price BUT you can't get them either......a higher end engine built 5 years ago probably costs 40-60% more in todays economic climate......just keep all this in mind.