Don't know, I don't really bring up the fact that my RB20 had a iron block, or my KA-T has an iron block, maybe its because they haven't broken the 2.0 barrier, they're still in Honda sizes. We have plenty of cars that'd walk your Sentra Matt, but I might build something to run with yours, still keep thinking about the G20 with the SR20DET or even VET.

E