Wheel spacers

Hi, looking to add some wheel spacers on our 50" RZR for a little more stability? Was thinking at least 1 1/2 or 2" spacers.
Any suggestions?

We haul or RZR in the back of our long box F250. I know we’ll have to crawl up over the wheel wells,but after the rocks we’ve crawled over that should be no problem.

Thanks for any input 38td