[Fot] Is there a difference between the early and late TR-6 Engine Blocks?

[dos_gusanos at msn.com]

How about the Heads?  I have to rebuild the engine in my TR6 and am wondering
about mixing and matching parts between the two.  It's just the pleasure
car.................Cheers, Henry Morrison, Albuquerque,
TR4,6,7..........................