Question/answer time: I'm looking at getting a 207 and shoving it into the 99, but from what I know a PFC works only on gc8's. Is this from the motor side of things, or from the chassis for some reason? Don't really want to change from the PFC as I don't have any qualms with it, but would I have to keep my 99 heads or something like that, or would it be possible to run a 207 with matching heads and all the other fruit?