According to Hayward's information, the impeller you want to use was paired with a 1.5thp motor from the factory. It will work with your 1.65thp V-Green.1.65hp
I have this
Century (A.O. Smith) 1.65 HP Motor, V-Green, Round Flange 56J, Variable Speed, 208-230V - Model ECM16CU - INYOPools.com
V-Green 1.65 HP Round Flange 56J Variable Speed Motor - ECM16CUwww.inyopools.com
It was suggested that I upgrade it when I installed. Here's the thread
Post in thread 'Pump question'
Pump question
I have a Hayward super pump. It’s about 3 years old. We purchased the house last year. We have been having problems with the gfci tripping and the electrician tested everything and said there must be water getting into the pump somehow. Then all of a sudden the pump for very loud. Upon...www.troublefreepool.com