Blown head? C'mon man, give a lil more than that. I'm assuming it's a 4 stroke. I'm sure Honda used that engine on something else or atleast a variant of it. You can find ALOT with Google!
I don't know exactly what the problem is. I picked the bike up for $100. Brought it to my mechanic friend who rebuilt my Warrior motor. He said "It would be easier to replace the whole head". Just trying to figure out if there are other years that'll fit it.
I trust him with these things. When he says things like "It would be better to buy a different one" He means it. He told me bad valve damage, which is why it doesn't run. and the piston nearly destoryed the cylinder.