Right Gord&Fran I've seen them advertised with 21/4 , 21/2 and even a 3in. flange with the same product no. , by tonight I'll know which one I got .
And yes Jerry it does take a long time to warm up , I still have the temp light that stays green until the motor starts to warm up as well as temp gage and when driving in temps around the freezing point the green light will come back on at idle . It would probably be simpler to just mount a 21/4 housing of which I have a few and run with that but my logical side never entered into the picture when buying this truck and it seems to stay outside when I enter the garage to work on the truck .
I appreciate all the input and have learned some stuff with it and I thank you all .
John
