ur thinkin of the srx mounts the sx mounts wrap around where the shock would normally mount on the casted clevis shock mount. then bolt into the bulk head. if theres a whole in ur bulk head it should work. also haucks sells mounts specifically for vipers and they are the same, i believe, for the sxr's which i have and is the same chaise as the sx. the srx has the flat mounts but the sx has a clevis at the top and a bolt at the bottom. lookin at the online parts catalog the part numbers are different for the viper and sx bulk head but they look the same and i know i have parts that will work on a viper off my xtc and the numbers are totally different. so matching part numbers dont always matter. i believe 90% that the mounts would work but i dont have a viper at my disposal to check for sure and my buddys shed is locked so i cant check his. i would go the mounts fist and see if they work seeing how they are like 10 bucks a piece it would be worth it ensted of paying 100 for a bulk head.