how would you go about putting two engines onto a nitro monster truck? do kits exist to do so?

I have seen people do it, i have even seen 3 engine t-maxxs but i do not think there is a kit or anything like that

i know for the savage there are kits for double motors... never seen a triple not to broad cast one site bein better then any other but savage central has them.

here is a dual engine hot bodies lightning :)
http://www.hotbodiesonline.net/kit.php?partNo=hb55008&lang=en