Nice truggy! Can you post up some pics without the body? I was thinking of doing this with the SB Pro but without larger spur gears at the time on the V1 series didn't feel comfortable trying it.
Is this a SB V2 or V1?
This in my opinion is where 1/10 scale electric and nitro trucking should go!
If I also recall correctly, if you need more offset than the standard truck rims from Academy, traxxas stampede rear rims will work and they have more offset as well. I think I tried a set out LONG time ago with my first SB, the SB Sport when it first came to the USA.
Man I'm getting old!