OK having sorted out the damper situation, my next choice is "Which exhaust system?".
On Dave Andrew's recommendation I need to replace my 4-1 (Caterham competition unit) with a 4-2-1 system.
Options are:
1) Have my system modified - but are the primaries big enough?
2) Buy the Caterham VHPD unit - how much and is it stainless?
3) Get a 3rd party system - EBD, H&S, Powerspeed, etc.
This is to go on a 200bhp+ K series.
If I get a 3rd party system, I'll get a Raceco silencer.
Your thoughts please gentlemen.
Yellow SL #32