If you're going "mountain machine" ditch the proaction and transplant a skid from one of the other manufacturers mountain sleds. For the front you can put Viper shocks on it but you need to either make your own shock brackets or look up Betheviper here he sells brackets for this conversion. I used to make the brackets but it's not a popular conversion anymore. I dont have any left and don't feel like making 1 set. I would look for the whole front suspension from a Mountain Viper. They are narrower in the front and have a different shock angle and I believe a different shock as well from the standard Viper. Even with all this the SRX is a nose heavy sled. You can make it better than it is stock in the deep but it will still be at a disadvantage.