I think those 10x5 exaction wheels are nice & will look good with special arches. They are also light too & will reduce your un-sprung mass over your 12s.
Apologies if you have done this already but here are a few things too look at to help with traction which worked for me;
- I put this equation into practice ---> Force (traction) = Pressure (weight of car) x Area (tyre contact patch). Corner weight the car on scales with you sat in it (by adjusting ride heights) then you will have the same weight acting on each front corner, so the tyres have the same weight acting upon them. Obviously, if one wheel has less weight on it, this is the one which will always want to spin as there will be less pressure on it pushing it into the ground.
- Making sure you have the exact same PSI in the tyres - to keep contact patch the same size... remember the equation
- Make the rear springs stiffer. When accelerating in FWD the weight transfers to the rear, if you have a soft rear end ( ) then the front axle will unload and you will be more inclined to wheel spin.
- Make the rear of the car around an inch higher than the front. Again, this helps with minimising load transfer to the rear.