[yamaha415]

I have a 2013 Club Car Precedent SN PH1338-400856 with the stock 18x8.5-8 tires. I want to do the PQ assassin motor swap with the additional required components, but I can't seem to get ahold of anyone a PQ for some answers. I have left two messages and an email, but haven't heard anything back. I'm sure they are busy so I though maybe I could get some of my questions answered here so when I do get ahold of them I don't take up too much of their time.

I am new to carts so forgive me if I am asking noobe questions.

I am targeting 40 mph with as much of the sleeper look as possible.

I think I will need the assassin motor, new controller, upgraded cables, and solenoid. Do I also need the heavy duty F&R switch and pot box (what does the pot box do?)

From reading it sound like I really need to consider upgraded brakes if getting to these speeds any recommendations?

Will my 6-8V batteries work for the motor or will I need to increase my voltage?

Can you have a controller to tune down the cart when my wife drives it with this setup?