I would say the whole pump but may have to mod the bolts the two sections that hold together on a superjet .. the impeller housing is threaded on a sj and maybe not on the venture no big deal .. you can mod that slighly a few different ways .. shaft is different and engine mounts are couch mounts but we are using that type in our sn sj ..
of curse teh start stop switch can be used but your going to have to lengthen it ..
pull every single nut and bolt and all hardware off that venture .. you never know what wil come in handy
.. hoses , clamps etc .. finger trigger etc ..