FLM 1717 build

[maxxmills]

I started this project about two months ago and have slowly been piecing it together at the Lightning speed of the USPS, pun intended. I will update & fill in the blanks later but right now I am at an impass and want/need some advice from you guys. The black chassis is just one I assembled with extra parts I had laying around, the 1717 mounted fine but my gearing options were zero, I was stuck at 30/65 so I came up with a different approach and turned the transmission around like a Revo so the adjustment wasn't restricted by the transmission case but now I don't have that notch in the chassis for the spur gear to clear. Anyone know how much I can raise the transmission up without causing driveshaft issues? Don't really want to notch my chassis just yet. Any advice?