Anybody know what seats these are?

[bravenrace]

Are these stock or aftermarket?
Any leads would be appreciated!
Also, what other street/racing type seats are good for fitting into a 2500M?

 

[mrtvr]

Seats like that were fitted to the TVRs up through the 1973 and early 1974 2500Ms. Then they went with a more conventional adjustable bucket seat after that.
It's hard to tell if the ones pictured are original or a close copy of them. Where they were sourced, I don't know.
Marshall