Hoping someone can help

Starting to think about getting back into the hobby after a decade, a divorce, a marriage and about 4 moves

I seem to have 3 engines left, the OS 46 ax, the OS 120 pumper and this

I seem to remember it being a semi professional conversion, I think I bought it planning to stick it on the front of a 120 lite ultra stick

Can anyone help?

Now to work out if my old JR 378 is worth keeping

Thanks Glen