Boring-out a TR6 engine?

[David Randall <davidra@corbis.com>]

Folks,

After a number of TR7s (still one of the most comfortable British sports
cars I've driven), and a ten year absence from British cars, I'm looking to
get into TR6s. I know them pretty well from helping my brother-in-law
restore a couple.

How far can you bore-out a TR6 engine? Can you make the bore and stroke
square? 

Thanks,


Dave
Carnation, WA