I guess you missed my last post..
I'm telling you to chuck the twin's setup on a 13b-REW. Even if your going to autocross/road course and you don't need alot of power, going with a small-medium single setup will save the engine bay TON'S of heat, it will save you, or your mechanic the headache of having to trouble shoot when something goes wrong, etc. etc.
"If someone has an engine that they can effectively TT to get more power from....I aint got probs with em doin so."
You don't have "probs" with it, because you don't understand the work that goes into it, or the benefit's/lack there of. I'll say again, unless your going to make HUGE POWER, and an extra 500-1000 rpm's of lag is a major concern, going from a single setup, to a set of twin's, is a complete waste. Build a few engine's, and compare a few dyno graph's before you make a reply.