I believe it does come with the vent hose, nice black vent hose. I know they don't come with water hose, however it does come with the three speed switch and wiring. As for the thermostat, 160* is standard, and if you want boosted heater performance, add a 12volt circulation/water pump. 3.3 gpm works great. This allows for greater water circulation or you can tap into the intake manifold plug for +water flow and then dump the -pressure prior to the raw water pump. This creates an excellant flow of water and great heat. Good luck Al
Supra Beast
Custom 496 MPI HO 425 hp
Custom Teak floor