Ive had a couple now and unfortunately one of the biggest problems nowadays is rust. Check the underside very carefully.

Make sure it's had a set-up recently. My last one had a Ralliart map on it but the fuel pump was struggling and running lean. Knew what I was buying tho and got it replaced then remapped. A 360bhp Evo 6 with similar torque is a quick car on the b roads.