If your a big guy definatley get the M1000 to pull you around! I have a turbo'd M1000 and it ripps! I had before just the slp pipe set up and nothing stock even the stock M1000 could keep up! foe example my bud had some issues with his M1000 and we raced it against a new HCR and the HCR beat it by 8 sled lenghts.. After we fixed whar was wrong with the sled..( found out hi spider ch!t the bed and spring and a tear in his power valve boot) We raced both sleds again and it was a good 9-10 sled lenghts diff and the M1 kept pulling! Just like everyone says.. Can't beat displacement! And future mods go were any modded 800 cant!