Alistair,
Thanks for the help. The motor is in a TVR and I was trying to make sure of the year of the motor. The Rimmer Bros. site was very helpful, and answered my question.
Just an observation....this is a great site! The folks are very friendly and helpful (actually not too surprising from British Car Folks). I have been on some sites where you are afraid to ask a question or give an opinion for fear of getting your head torn off. Certainly that is not the case here. Keep up the good (great) work!
Bruce