My Mazda 626 had a second engine put in, but I blew it out because of a slipped Belt overheated the engine. I am thinking of buying a rebuilt or used engine and having someone install it, and then have upgrades done, like paint job and window tint and even new interiors like leather bucket seats b/c the car's body is still very nice (no wrecks) and no window breaks. And I just purchased new tires for it before I burned the engine. So, just need some advise on getting it all together. I think it could be a nice car if all above is done, but want to do in stages because of costs involved. Also, could a V6 be installed in this size car? Is it advisable? Any advise or answers would be greatly received.