The TR6 has 5 cylinders compared to the 4 for the MGA or MGB, and has a lot more torque as well. Today, TR6s are very popular with British car enthusiasts, and restored models can go for big bucks (if you can even find a very good one).
I went to the Tartan Fest a few weeks ago and saw quite a collection of vintage British cars. A lot of Triumph TR6s. My aunt still has one and some guy is supposedly working on it getting it roadworthy.
I remember it sitting a lot as a kid and my uncle hating it while working on it.
The TR6 has 5 cylinders compared to the 4 for the MGA or MGB, and has a lot more torque as well. Today, TR6s are very popular with British car enthusiasts, and restored models can go for big bucks (if you can even find a very good one).