It's probably the same height as any other 8ight mount. Don't go changing crap like that. Get some 1mm shims and shim up the starter box motor and open up the hole in the chassis with a file so that the wheel can fit up in the chassis well. I'll snap a pic of my chassis in a minute to show you what I mean.
Tekno EB48.4 HobbyWing XR8 Sanwa M12