I have the following
JCW parts:
JCW Motorsport Intake*
JCW 380cc Injectors*
JCW GP Intercooler
JCW Exhaust System
That cost around £1250 Fitted. I didn't want the
JCW cylinder head as its just a slightly polished standard one (saving my cash for a big valve head).
What you need is a 15% or 17% reduction pulley (the one in the
JCW conversion is a new charger (same as yours but new) with a 11% reduction. The bigger the reduction the higher the boost pressure) I went 15% just to be safe.
Following that a RMW exhaust Header/Manifold (or Janspeed if on the cheap).
Then for the biggy.... The RMW "Jesus" Big Valve Cylinder head (Dyno, Drag Strip and Dyno proven) approx £1999 USD and some bigger 440cc (?) injectors.
After this you should be looking at over 260bhp for less or the same as a £3500 "
JCW 210" conversion (... which is it turns out barely make 200bhp on the dyno), a stock (
JCW) looking engine bay and a very fast sleeper. Mine is pictured, the badges are original but £40 off ebay for front and rear
Where are you based?
* Can be bought as the "210" Upgrade kit for older JCW cars 
