hey guys finally got the yellow 60a esc put in my buggy...couple things i had to do to get body clearance..first , the fan had to come off of course, second, i had to modify the 3.5mm bullets that come soldered to the wires..I simply removed the wires and used the dremel to cut off the entire solder cavity so I could solder to the flat top left by the cut. Turning the wires off to the side instead of straight up and down gave me all the body clearance I needed on the RB5..Programming was a cinch with the usb link.Updated to 805zero timing firmware and viola!! we have a blinky legal 17.5 system..The 17.5 that came with it is nice and smooth.It is one of the 17.5 sensorless ezrun motors with a timing rear end bell.Took it apart to confirm this, and except for the R endbell it is the exact same as the 17.5 Ez-run that I beat the snot out of on my backyard track for over 2 years..That put my mind at ease and I am confident that this one will be just as reliable..BTW the 3.5 bullets fit nice and snug, so they arent coming out of the socket on accident by any means..It takes some twisting as you pull to get them out of the socket..definitely bargainof the century for those of us in need of a blinky legal system, but dont want to spend $200.00 to run the class!!