quick comment on the ex tech - I raced against and pitted for 3 people this past weekend that were running them.....
Fully Modified 21 in Buggy - wow...easily the fastest car on the track...not even close...it made vspecs look like they were going backwards
Fully Modified 24 in truggy - brutally fast...incredible power, good powerband....it was thirsty though...5 1/2 minutes was the limit (running very rich however)
Regular 24 in truggy - very impressive, but the fully modified one was definately quite a bit stronger
2 of the people did appear to have some issues with fouling plugs and flameouts...I have heard some switch out the carbs to an OS or an RB though...they are definately serious, serious motors..no doubt about that