If you are confused by the question mark, the seller answers that issue here:
Up for sale is my ONE OF A KIND TR7 (?). Why the (?) you ask? As you can see from the pictures, while she started out as an anemic 1981 TR7, she has morphed into what she is today. She is now fitted with a 231 cid Buick V-6 engine coupled to a Camaro T-5 5 speed and delivers the power to a Mustang GT rearend with 2.73 gearing and limited slip. The brakes are Wilwood aluminum 4 piston calipers on the front and 11' vented and drilled rotors.
See a more loony V6 powered Triumph? firstname.lastname@example.org