they never put an R engine in the corolla, unfortunately.
the 21R-U is a japanese smogger engine. they didn't use the 20R or 22R since they're both over 2.0l, which would mean every vehicle produced for sale there with those engines would've been taxed big time. so they developed the 21RU, which is like a baby brother to those engines. it's essentially a 20R with a tiny bore, same stroke i think.
