I have seen to U shaped brackets that attach to the front rack (on a utility quad) with little fingers that hold it snug but are still able to release when needed.
Like this,
Best bet would probably be to stick with parts for your specific machine, then if you want buy an oversized piston for the lt250 and have the cylinder bored to that.
On our 2001 there is a little circuit breaker under the rear fender. You might have one too and need to reset it. Check here for an explanation, https://itstillruns.com/how-to-reset-the-breaker-in-a-suzuki-lt80-12365593.html
It looks like this,
Started when my uncle bought his over to store at our house. He gets free storage, we get free use. That then blossomed into multiple quads (and a dirt bike) of various sizes and models.