Hello

Ive got a track day coming up at castle coombe next week and really need to get a center box on my car, at brands i just managed to squeeze under the 105db limit, and coombe is 98 so ive got little chance !

The car currently has a 3.5 inch stainless system which is good but only has a rear expansion box, the system (being stainless) is in okay very usable condition so im thinking id rather just add a center box to the system which should help!

Im thinking something along these lines, : http://www.burtonpower.com/jetex-3-5...etu328900.html

really im looking for as big as i can fit under the car, does anyone know what size will fit under the car?

This is where alot of systems seem to have mid box's fitted, ill be under the car measuring away in the week just after a rough guesstimate





The car is a sierra cosworth

cheers!