There are many $200 buck engines on the market that will get the job done B5, P5 Alpha, Some of the Vspec's are around $200 now or a Nova BF limited will be more than enough.
Here are some links to help you>
Werks B5
http://www.amainhobbies.com/product_...tor-Turbo-Plug
Alpha
Contact Jimmy Wright on R C Tech (Racecrafter)
http://www.rctech.net/forum/private....=newpm&u=44619
OS
http://www.absolutehobbyz.com/produc...roducts_id=304
Nova
http://www.absolutehobbyz.com/produc...oducts_id=2082
http://www.absolutehobbyz.com/produc...products_id=89