Has anybody ever made a template to copy the 13bre ports onto a regular 13b? it seems like that would be a pretty decent, slight port job. Are the two types actally all that different? I think i remember seeing pictures comparing the two. I'm not even rebuilding now, i'm just thinking for the future, but i want to do some porting, i just dont want to lose ALL the low-end power when i rebuild. Would that work well? Anyone tried it?

 

why would you want to?

the big difference in the BT and RE are the intake runners. longer runners on the RE give it more low-mid end torque.

your question should be more like "can I port my BT to match the FD or even 20B ports?"