if you put it into perspective though; you'd get a fairly tidy bpu supra for about £7000. if you go for the phr street kit you'll be saving a few quid also, add on the other supporting mods and you'll be looking at about £5000 for decent parts (depending on what stage the car is at on purchase). if youre looking at doing the fitting yourself, you'll save a packet in labour cost; the only other thing is to get your ecu mapped, which shouldnt cost the world seeing as a small turbo can be run on a piggyback. so youll be looking at around £13-14000 (obviously a rough estimation with the assumption that you'll be doing the majority of the work yourself) for a car that will probably push out a driveable 550bhp. added bonus to this being that you'll have the satisfaction of building your own monster. the downside to buying one thats already been converted being; you wont know exactly what has been done to the car unless it has been well documented and all receipts have been kept, and you dont know how much abuse the turbo has given the engine. you wouldnt want to buy a lemon