Hi Mexico Brown
Short answer is yes and yes! The long answer is very long indeed!
Roll as such is not a problem on any car to be used on ordinary roads - although sea-sickness could be! The real problem is lack of agility - the car doesn't respond properly to steering input. The P6 does have problems here, I call it turn in lurch understeer. The cause is not only the roll but also that the front dampers as specified by the factory are a tad soft. BUT one the car is set into a corner - so a nice long sweeping bend on the open road - the handling is actually pretty well perfect (or should be if the car is in good nick). That is to say there is no hint either of oversteer (tail wanting to step out) or understeer (car wanting to go straight on). So in the real world the problem is mainly confined to roundabouts and low speed very sharp twisty bits.
The turn in lurch can be 95% cured by fitting the uprated anti roll bar, together with stiffer (adjustable?) front dampers.
Unfortunately, in fitting the anti rol bar you have increased front roll stiffness. So now the car has a greater tendency to understeer in the previously perfect long open bends. To restore perfect handling you then need to increase the rear roll stiffnes to match the increase at the front. This is achieved with replacement rear springs to factory "Heavy Duty" spec. They are not available off the shelf, but I have the specifications to get them made with only minor inconvenience - and not expensive, say around £130 - and you needed new rear springs anyway, didn't you!
After all this attention, rear ride quality is unaffected. Front ride quality is definitely poorer thanks to the stiff front dampers, but if you use adjustables you can set your own compromise here. Roll is still present but is back to the level of a decent modern hatchback. And the drive-ability of the car is absolutely transformed! You still have the perfect fluid, fast A road behaviour, but now the car can be positively hustled in town and low speed environments too.
Chris
