You will want to double check that this is a good match, but something like this looks equivalent to the Eflite motor that they sell as a replacement for the Trojan:

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2141&Product_Name=TR_35-30B_1400kv_Brushless_Outrunner_(Eq_AXi_2808

It is about 1/4 the cost of the Eflite motor, and I think these Turnigy motors are fantastic.

Good luck