wible

I have got a short engine block from a my98 wrx wagon with the intention of fitting it into my my95 wrx saloon.
I know that i will need to use the earlier heads etc but i need to know what (if any) the differences are between the internals.
Both engines share the same con rods,and i plan on changing the pistons for my95 saloon items but the crankshafts have different part numbers.
Its just the crankshaft thats causing me concern at the mo. Any help anyone can offer will be apprieciated