Hello TFP Experts -- my IG pool was built in 2007 with a Pentair single-speed Whisper-Flo uprated pump (1.5 HP uprated to 1.65). Wanted to wait until pump needed replacing to change to two-speed or variable. Everything is glued in and the pump housing appears to be in fine condition. So can I just replace the motor on the pump with a two-speed? If so, how do I determine compatibility? We have just a plain old pool, no extras (no spa/waterfall/etc.). I think the variable speed pump might be too many bells and whistles for our needs and I am always suspect of the durability of electronics. Also encountering availability issues and super high costs. Can you kindly provide guidance? Thanks in advance!