Fucking awesome little cars, they get the first 10mph dispatched with amazing ferocity they really do, its amazing how they launch.

Not mega powerful as standard though, but easily taken to about 280bhp where everything just about hangs together other than the gearbox, and there lies the problem

You are looking at about 4K for a PPG gearkit (so about 5K for a built box) and thats the only way you will see the box being reliable at big power.
Although a couple of grand of quiaffe is fine for 300bhp or so even if driven hard (although not unheard of for the casing to split)

Absolute cunts to work on, its an engine and box out job to do almost anything on them, but in fairness it does all come apart relatively easily.

Standard pistons/rods arent upto the sort of abuse/power that YB ones are, but uprated parts are cheaply available for them so not a big problem.