Make sure its had all the belts done recently as this can cost alot, the 20vt is engine out job, unless u take to speacist that knows what there doing. Do all usual Checks oil, water. Try getting one with full service history and dont get a a cheap one(as i did, and headgasket went after 3 days). Check Under the car as older cars can rust quite bad. If i was to buy another one i would try and get one off someone on this forum or the Fiat Coupe Forum as you have got more chance of it beining well looked after.