If it's anything like the conversion of a Revox, you'd need to replace the capstan shaft, and use different motor mounts to compensate for the different capstan diameter.
I am a 2 track 1/2" that does 30 IPS per manual spec I am not sure as I bought it used and always run it @ 15 IPS when I use it. THe increased bottom and "phatness" in my best hip-hop voice works great for rock and other hard hitting material...