Regarding your TR-6 inquiry, check the rear frame area, where the trailing arms attach, VERY CAREFULLY for rust. They all rust to some degree, but many are really weak in this area-even Cali or southern cars. Repairs are possible, but labor intensive, as the body shell must be removed to properly replace the bad sections. Also check the areas around the headlights and taillights, as well as the rockers for rust and/or incorrect repairs. Everything else about the TR-6 is bulletproof, and by 1972 or so, even the Lucas electrics had most of the bugs worked out. As for years, I think '72 and '73 are the best, as they had the dual pipe exhaust from manifold to tailpipes, but no air pumps, egr, or big bumpers. Good luck!