looka t ofna manifolds. i ran that same picco in my ld3 and my gpx4 pro. last i checked i think ofna sold a manifold to fit the CD3 that may be just what you're looking for:

here it is offered at NITROHOUSE.com, this is where i get all my ofna stuff!
#10072 OFNA 1/10 Pipe
1/10 Right-Side CD3/ Pipe Set $47.96
http://nitrohouse.com/images/engine_...ipes/10072.jpg