TR3A brake rotors

[Angelo Graham <a3graham@mc1adm.uwaterloo.ca>]

Hello listers:

Trying to sort out some of the options for front brake rotors on the 3A.  I
have been told that two different size rotors were fillted to the 3A.  Both
are interchangeable and compatible with the 2nd generation Girling caliper
(16P?).  Are there any other options for 3A rotors?  Can the rotors from
the later 4s' or early TR6 be used on the 3?  Wondering about this as there
is a considerable price difference among these rotors.

Thanks,
Angelo Graham
1959 TR3A
Waterloo, Ont. Canada