Truck, propane 427 motor

[Project_Gotham]

My father calls me today and ask If I want a FREE complete Chevrolet "427 tonawanda" engine out of a 88-90 GMC/Chevy TopKick Propane delivery truck. The motor ran on propane. He said the motor is huge, might be a tall deck 427. It was pulled due to a spun bearing, replaced under factory warrenty. It has been sitting in a bin since 93'.

I was thinking: a rebuild and scrap the top end for Hi-Po parts.
What do ya'll think about this? Can this be re-built to be a kick ass 427 ??
Or are there diffrences from car 7.0's? Stroker maybe????