Originally Posted by Speedypeterb

I used the horn that came with the servo or you could buy a nice alluminum one.

Iwill run the car this coming regionals in florida then I will coment.

Have seen the car run and run very well, as for the diffs they are very small even smaller then capricorn and xray and as you get smaller the tollerances need to be smaller, so hence the shimming is needed.