I have a 240 on my 92 and love it. You have everything to gain and only fuel economy to lose. There is a ton of bottom end and combined with the other mods, the 240's can really rip. I have a sleeve in mine (damaged cylinder) and it has been going strong for 7 years now. Not one problem. You will have to jet a little richer, but with any mod you need to rejet.
Good luck and if you have any more questions, just ask or do a search on this topic.