What motor size can i use ?

[cadeco]

Thanks Bushwacker.

That's what i was thinking , but, if the rule is " 1 inch for each foot" then , the 20" would not work because using it i would need a 24/26 inches setback giving me 2", maybe 3" to be raised and because the difference between shafts is 5" i would be 3 inches too short. What do you think?
thanks again...