I plugged the booster pump hole with a simple pvc threaded cap.
Drilling the stainless case for the motor mount and shaft was a lot more work than I anticipated. I highly recommend using a quality carbide bit. I used a cheap harborfreight "titanium" step bit and it took forever even when using water and as much pressure as I could generate to cut a 1.125" hole.
The motor I used was from Oriental Motor, but not the same as ICU2s. Here is an Amazon link.
https://www.amazon.com/gp/product/B00JG4CDLA It has slightly less power but more than enough to turn a fully loaded drum with ease. The major difference is the gear set which is straight instead of angled. Not being angled means that the motor weight is hanging further off the side of the RFD, but I found there is no problem as the stainless case is heavy duty on the BE unit.
My first thought was to use a gilmer belt drive, but I was able to purchase a pinion and spur gear from Tom Tran, who had been selling complete conversion kits for the Blue Eco. He didn't have the kits anymore when I inquired, so I had to figure out the mount, shaft and seal. Luckily ICU2 had posted detailed photos of his kit which was very helpful.
The drive shaft of the motor/gear set that I purchased was short, so I had to make my own shaft adapter to hold the pinion gear. The short motor shaft had a keyed, 5/8" dia. shaft, so I purchased a 5/8 collar and then welded a metric hex bolt to the end to extend the shaft to fit the metric pinion gear. (see diagram)
Attachment 591178
The shaft collar had a 1.125" outside diameter where it penetrates the stainless case, so I purchased a shaft seal to fit that size. Here is the one I purchased:
https://www.amazon.com/gp/product/B005M2RP8Q
To hold the motor and seal, I cut up a couple of my wife's polyethyene cutting boards that were 5mm thick. I drilled one piece with a hole large enough for a hump on the case of the motor to pass through and the other with a hole that matches the outside diameter of the seal to hold it in place. Once sandwiched together between the motor and the stainless frame these cutting boards hold the seal tightly in place. (See diagram). I used some old rubber pond liner to cut gaskets that sealed each piece of the mounting plates.
Attachment 591179Attachment 591180Attachment 591181Attachment 591182