Sniffy,
Chevrolet used the 216 for many years, it's a good motor and for the limited use the fire truck will get I would recomend replacing it with a 216...Keeps it simple!
There are tons of running 216 engines available. Place a want ad here in the Stovebolt and see what pops up! Someone may donate it to the fire company for the tax write-off...
Mike B
