Here's an interesting thread on PY about the RAV:
NEW RA-V Engine Program POLL
I had just talked to Jim Butler about some current engine stuff I am using him on and casually asked if he had ever thought about producing an alminum RAV head, he said there was no market. I kinda disagree with that, but everyone has their opinion. Then this thread pops up on PY, I don't know if anyone has the ability and seriously considering but I'm all for it.