We're putting a V6 from a Lexus ES300 into a 91 MR2. Not unheard of but I wouldn't call it common. We also have done a Beams engine in an AE86 , we helped with an RB25 in a 240, a 1J in a Cressida, and lastly we're doing a V8 from an ES400 into a Cressida. Again, most of these not unheard of, but not too common either. It's all good fun.
MR2
AE86
Cressida