Forgot to say, I also had my larger rear antiroll bar fitted and a new coolant tank for good measure. Engine bay now looks more factory fresh and I'm very impressed with how much more eager the car is to turn into bends and roundabouts now - the steering feels lighter on cornering and the heavy front end feeling / understeer is much reduced. Haven't had any snap oversteer yet, hopefully that won't happen!?
I think out of everything I've done to the car so far, the roll bar mod has been the most worthwhile. Strongly recommended to all v6 owners
2002 Spider V6 24v - EL downpipes, Ragazzon exh, Ultra Racing roll bar.
1998 156 2.5 V6 - Konis, Supersprint exhaust, 166 alloys, 4-pot Brembo conversion.