Trilogy needs a specific kit - regular cocker ones wont work. The pump arm is shaped to run through the ram mount on the body. I fitted a GAT kit to my Trilogy - works a treat. Shipped it in direct from GAT products in the USA last season.
Hi I got a pump kit for a trilogy from Hooptie last year and other bits and pieces from Paintball gateway. Very easy to convert will put pics up later if you want / need. Would recommend both companies.