.........hey 'PA39' is BB still running around TW with a 'twin-can'?
He used to have a great workshop there (still may have 4 all I know) 'cause I used to work there
I imagine engine life is such a variable thing like most mechanical things.
My old Ford (BA) which is now 10 yrs old 300000+k's on it & it's just had the 2nd set of brake pads done, it's up to you as to how you want yr machinery to last:-)
Wmk2