Trick question, both those cars are junk. Unreliable and virtually undriveable. The mgbgt and the tr6 make fiats look good. Those are in my expeirience two of the worst cars made in britain.

I could understand the quandary if you had to choose between a tr250 and a healy 3000. those were halfway descent brit rides.

Sell both and and start saving for a real sports car: a 300SL. Until you find one just pick up a 560SL, another well built car.

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Nothing in this world can take the place of persistence. Talent will not; nothing is more common than unsuccessful people with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan "press on" has solved and always will solve the problems of the human race.
Calvin Coolidge (1872 - 1933)