they are not awful handling wise James at 150bhp but at the 190 odd i'm running the shortcomings are very obvious very quickly.
the GT unlike so many other coupes has a genuine good shout at being a practical family car if you have young ones a opposed to teenagers, the stock suspension I think was designed to be a halfaway house and works if you treat the car as a GT/commuter rather than having any real sporting pretensions for it.
the minute you unlock the engines potential you need a bit more rigidity from the underpinnings to really chuck it about,funnily my previous petrol GT (2.0 JTS) felt much lighter and more nimble on stock suspension than my current blackline did, this was down to the lighter petrol engine and the fact that my last car had 31k on the clock, this one had 74k on purchase more tired suspension components, I had no plans to mod it being happyish with it as is and being aware the petrol engine would cost a good few quid to improve and not a huge amount of power is available
anyway I digress..
as a bare minimum I would get eibach ARB's.. of all of the handling mods in terms of the most drastic change and biggest bang for the buck this is what I would do along with the re-map.
then in order
brake pad upgrade
suspension, either B12's or lowering springs on the stock shocks if money is tight.
you already have the Q2 diff
I have the quaife and it's brilliant.
oh and I can't stress enough how important the swirl flap delete is...not a performance mod but no point in spending time and money on getting the car tip top for a flap to grenade the engine.
and when you do the clutch get the JTD performance one as its rated up to 275 BHP which you will never get near without doing everything!
lastly decat down pipe makes a huge difference to turbo spool, much less laggy and well worth doing.
sounds like fun