Personally I wouldn't do it. Used vehicles are headaches alone. But turbo'd used vehicles are like an ongoing migraine. I had a used bugeye a couple of years ago. Had about 130k miles. 1st thing that went wrong, entire exhaust. Replaced it with HKS, did a stage 2 tune. Then my tranny started to go, and eventually went like 2 weeks later. Had I replaced it, I knew eventually the turbo would go, and then probably the motor itself. When I go for tuner cars, I usually buy new or I don't buy at all.