I went with the 1JZ non VVTi in my cressida. I went with the 1 J because it's cheeper than a 2JZ, it's OBD1, makes decent power with a stock setup, and when the bottom end quits on me, you can find a lot of replacement parts at the parts stores if you know what your looking for, and I can find an NA 2J bottom end and do a 1.5JZ for less than 500. The only other engine I had considered for this chassis was a 1UZ VVTi because of its light weight and sound, but the aftermarket is too limited and overpriced for the power I am hoping to have.
Even if I still had a S chassis, I would still go the JZ rout. I was in the process of swapping an RB20 in my S14, but there wasn't much of an aftermarket for them at the time ('09), so I parted it out. But as far as RBs go, I think they are too over priced just to have a Skyline engine
, (both for the engine its self and the aftermarket), especially the 26's. And to even build and RB with the same displacement equivalent to a 2J is big money. Only if I was loaded or building a "demo" vehicle for a shop would I consider an RB and it would have to be a 30. Honestly I think I would prefer an SR over an RB because of the vast cheap aftermarket for a fun little engine with lots of potential. Basically my opinion on engines for S chassis is Turbo>NA, JZ>SR>LS>RB>CA.