I do wonder what differences there are between the mk2 and 3 on the weight side of things and if a mk3 g40 would really be any heavier than a g40 in the real world...
Suspension wise, I've got Koni damping adjustable springs and shocks, G40 rear axle, nylon ARB bushes anf poly TCA bushes, so nothing too fancy. There's no LSD, but he back tyres are 55 profile and the fronts are 45. It grips well in the dry. There isn't much hope in 1st, but its fine in 2nd if you're pointing in a straight line, otherwise easy to light up the tyres. It will spin up in 3rd in the wet in a straight line though!