For the front you need somethin like this slip on spacer, 10mm is far to small for a bolt on spacer, it gives next to no thread for the spacer to clamp to.
http://www.ebay.co.uk/itm/ALLOY-WHEEL-SPACERS-TOYOTA-SUPRA-MR2-10MM-/390124313266?pt=UK_Cars_Parts_Vehicles_Wheels_tyre_Trims_Trims_ET&hash=item5ad5389ab2
I would not use them studs though, use ARP extended wheel studs.
For the rear get a quality bolt on spacer such as the H&R, I would also use ARP studs on the rear to be on the safe side.
I would ask whoever you buy the spacers from to make them 60.1 for your cars hub and 73mm for your volk wheels so you dont have to use spigot rings on top of spacers.
Its still a bodge though even going to them lengths, id sell the wheels and buy others.