I'm looking at purchasing my 2nd car, and am deadset on a Mazdaspeed 3. I've found a couple for pretty good prices and need advice. One is bonestock from a dealership. It had its engine replaced at 88k and is currently in the shop for a misfire (dealership thinks coil packs were installed wrong) it has 130k on it. The other is already fairly modified. It is advertised as "lots of aftermarket parts and stage 2 tuned". The carfax shows a different mileage on it than the autotrader listing. Should I be weary of purchasing either of these cars? Is buying a tined and modified car a bad idea? And is a car that's misfiring going to cause me lots of longterm issues if the misfire is fixed at no cost to me before I purchase? Any help is much appreciated, and all advice on buying a Speed 3 is very welcome! Thanks!