Can I make my mx3 gap an ultra bee ?

I have an mx3 which has been an amazing bike but I’ve been wanting more power to keep up with my friends ultra bee, I was looking at an e ride pro sr and I realized it’s only 72v. Could I upgrade my Mx3 to push 12.5 kilowatts or more like the sr? And are there Any options for a long seat like the sr and ultra bee ?