Hi all, I am also in the last stages of converting my Hyper ST. I got the Hyper motor mount from RC-Monster and after checking with Mike which battery tray to order I am now waiting for that one to be delivered. I had started to make my own tray from High Density PolyEthylene but I wasn't satisfied with the fit. The motor is a Castle Creations 1500 series 1800kv motor.
Here are some pictures:
Space is really tight in the front near the battery. I was thinking about moving the battery to the rear of the car, but I still think the car will be better in balance with the battery in front.