omg. this topic has been covered a million times. the RB20 sucks. its heavy. i doesnt make power. parts are hard to come by. the harness is retarded.

https://www.tamparacing.com/forums/s...highlight=rb20

https://www.tamparacing.com/forums/s...highlight=rb20

https://www.tamparacing.com/forums/s...highlight=rb20


and this was just putting "rb20" into the search feature. 5 more minutes of hunting and im sure you;d get an answer