If i bought this engine for a 2.5 tmaxx roller what else would i need to make it rtr. http://www.amainhobbies.com/product_info.php/cPath/1_23_2156_1933/products_id/166297/n/Dynamite-Mach-2-19T-5-Port-Traxxas-Replacement-Engine-w-Slide-Carburetor
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