Um... well, they are better than Boges...

The M030 stuff isn't up to serious track work. Sorry. But Russ is right about the diff - that's worth $2000 right there, and you will need it.

You're far better off to SELL the M030 crap to someone who wants to track his street car, and use the proceeds on a real race suspension, like the Bilstein system!!! PS - I do have valving that will get you pretty close, happy to share it - whether you go with 30 or 34mm t-bars.

Again, the offer stands (and is highly encouraged) - give me a ring if you want to know more about these cars in the wheel-to-wheel environment.