Hmmm...... that gives me a lil to think about.
I have been thinking about getting into RC crawling but wasn't sure if i wanted to go the RTR or Kit ax-10. I then found this Ax-10 kit but it comes w/ all the neccesary electronics...
Do you still have the stock rear narrow track housing? If so I would recomend the low backspacing (2.5") and don't run wheel spacers.
But if you swapped in an IFS rear then i would run the wheel spacers and a more nuetral backspacing (3.75")
I currently run IFS rear end with an 85 front end...