u/Aggressive_Dirt_2335

I have over a dozen of these batteries and want to build an e-bike that can use them. They operate at 72V, and I'd like a motor that can go 40-50mph. Basically, has anyone done something similar, or specialize in this? Looking for links to a frame, motor, a way to carry multiple batteries on a bike, other logistical things, etc. Any help is appreciated, and if there is someone that specializes in designing and building e bikes, I'd love to get in touch.