How good is the Haynes IRS?

[Talonmotorsport]

This subject will throw up all sorts of answers mainly between the use of live axle Vs IRS as both have different pros and cons. Some times the problems with driven axles is not the type of axle but how it controls it, if the spring rates are not correct or the bump and rebound are not set correctly for the type of surface it is running on then the car will no grip or handle as you want it to. The other thing to consider is the size and weight of the rims and the width or the tyres as this all adds to the unsprung weight that the suspension has to control.
I would say before you go cutting the car about for a different type of drive train I would take the car to a proper suspension company who can set it up properly, you already have a starting point that can be measured and assessed with proper equipment. Your current set up may only need different spring rates, correct damper valves or just an LSD.
Internet forums are great for getting points of view but I would spend a few quid with the people who make a living from setting up suspension systems for race cars before changing one incomplete set up for another.