InitialD--
http://controlcentre.rctech.net/hp/servos.htm
and I know you can get them cheaper..but it has been too long since I bought mine over a year ago.
Also about tires. I ordered 40 Pair from that place last year. SHipping was $25 to me in DC. You do the math..I think it came out to about $7.65 per pair for the rear and $8.25 per pair for the Front if I remember correctly. To bad those tires do not work very well for Electric Carpet racing....but for Nitro they work great.
40Shore Fronts and 38 shore Rears on my NTC3.