Slot car guys?

$70 for 1/24? Thats even Better!

Im so out there on the motors though. The one I was using ran like 1.078@47-50mph, which was one of the faster cars of the night. It dropped off when the glue built up over a couple rounds.

Based on that time, can you guesstimate what kind of motor I need to be looking at?
Im seeing lots of grp 16, some grp 12 and some grp20 motors on the internet but I dont know whats the faster of them. I know as a general rule of thumb, the grp 12 is faster than group 16, but I dont know motor was on the one I ran last week. My friend really couldn't (or wouldn't) tell me lol..... He's mad he lost to a noob.

What kind of nitros do you run?