Okay, with all that being said about sloppy blowing from twins, I happily acknowledge the superiority of a single turbo setup on the RB; however, I still plan on double trouble. I know the -9s were quite popular for some time because they seemed to meet that sweet spot between the -7s and 5s, would introducing VCAM and/or stroking to 2.8L provide the additional displacement/flow to push twins closer to the 500-600 goal? Does it make more sense for a daily to just do an engine overhaul, slap some -7s on it and enjoy a bit more reliable power? Has anyone driven a mine's overhauled and tuned engine? I know they certainly don't approach the power numbers that you drag monsters do down under, but for daily street usage, I just want it to be fun and healthy.