Yes had a 480bhp BPU'd TT then a 390bhp TT Aero.
For £2,000 you'll see 450bhp with BPU (Basic Performance Upgrade) which is uprated fuel pump, exhaust, decat and restrictor ring, plugs, filter.
Not as much fun as the Scoob especially on bends but straight line speed of a Supra is amazing, still can't believe how quick they were. If you go for an auto they perform really really well but make sure it doesn't kick down on bends else you'll be instant boosting and off the road.
mkiv supra forum is a good place to look.
Here was my two