Will the inner fenders from a Vixen 2500 fit a 2500M?

[Rocky-TVR]

I've got a '74 2500M I'm doing the body and paint on, and the car needs inner fenders.

I have access to a pair of 1971 Vixen 2500 inner fenders. Could I make a mold from these, and make a set to use for the 2500M?

I would guess, since the chassis are quite similar (the Vixen 2500 has the 90" wheelbase, and the square tube outriggers) that the inner fenders would be very similar, perhaps identical.

Any practical experience would be greatly appreciated.

Rocky