if it has a one piece rear main, the engines are similar enough to swap IMO
The crank balance might be different, so just use the dampers and flywheels off the engine you are dealing with

 

So the block on that engine would say fit with my 1991 if it was needed ?

 

Maybe, if the rear main seals are the same style
They changed the crank balance weight from 28 to 50 oz or something back in 1981
A junkyard crossover chart will say for sure, Maybe call one and see if the actual block is the same
The complete engine would probably work as a fuel injected motor if you swapped all the manifolds and AIR stuff over

 

Dude you are a ****ing G seriously thank you

 

Is Surfing with the alien a Joe Satriani reference?

 

The very same.