ORIGINAL: jonnymac
I'm just saying I've got the RG P (X) in a hyper and you need the mount spacers to fit the motor. This leaves the flywheel on my model some 1/2 inch into the chassis and I'm not so sure the wheel on a starter box will reach it.
Mine was fine, so he might be ok. Actually my Hyper came with a starter box and a Hyper 8 port w/pull start. I was able to use both when ever I wanted but eventually removed the pull start and one way.