Which Thermostat

[BVMS]

Have a 94 Powerstroke which thermostat do I need. I seen the one on Diesel Site but Says need a different one? Truck will only ever get to the first line on the guage unless pulling pretty heavy. Thanks

[CT Performance, Inc.]

I've tried both..either one works fine..My '97 runs just as hot as my '95 did with Bobs stat..