[Gav]

LS1's are 5.7Ltr
LS2 L76 and L98 are all 5.967 Ltr
LS3 is 6.162Ltr.

I agree that a bit of a re-shuffle is required for class three, how exactly to do that will not be simple, but it seemes silly to have three quarters of the feild in one class.
The inclusion of the Daytonas IMHO is a step in the right direction.