I am looking to buy the low compression domes for my 05 800 mod motor so I can run it on pump gas. Do any aftermarket places sell these or do I just order them from Doo? Are the domes all I will need or do I need a different head as well? I will use it mostly for ditch riding and playing, not much long trail riding. Any other info on parts/changes I will need and a starting point for jetting would be appreciated. I did a search but couldn't find what I was looking for.