New to me GT235

[mark1]

Hi.I just bought a GT235. The person who owned it had to replace the engine a few years ago. (B&S 18Hp V twin)as it spun a bearing. Now this one had a loose exhaust valve guide and it held the valve open. I replaced the head and a few gaskets and seems to run fine.
I'd like to change the 42" mower deck for a 48" one or larger. Anyone know of a good used deck? I'm in NW New York.