how to retro fit electric washer pump to chevelle GM mechanical housing

ALL MY VIDEOS ARE IN 1080p HI DEF so check that out car is a 1970 chevelle.. this mechanical washer pump should be on a lot of years but this video is only on the pump found on 70-72 GM a bodies electric washer pump is from a 1988 G20 chevy van it can be purchased from orielly for $16.99 NEW this might be a little half assed but it works and i would rather have this in my car than to buy another mechanical washer pump for $65.00 just an idea on how to do the full conversion.... thank you