Glad to see someone is gonna try that box, car has come a long way in such a short time. Keep it up! What are you thinking for tyres? I'd love to try a staggered 225/205 f/r setup but the only tyres available in 225 and 15" are R888/R888R (bit too aggressive/soft for my daily use unfortunately). Tyres will help you figure out any handling limits, it's quite easy to overcome regular tyres on track