converting 2.0 to 2.5 liter engine

["HARRIS, ALAN J" <AHARRIS@entergy.com>]

> I was having my crankshaft turned for my '69 TR6, and low and behold, a
> previous owner has swapped engines to a 2.0 ltr, presumably from a GT6
> (?).  According to the guy at the machine shop, the blocks are essentially
> the same, as are the piston diameters.  What's it take besides replacing
> the crankshaft to convert to a 2.5 ltr?   Is the additional hp worth it?
> 
> Alan Harris
> '69 TR6 (mostly)