Hi there.
I just sent for a cowl for my CG Super Chipmunk from:
http://www.fiberglassspecialtiesinc.com/
I have a Saito 91S in mine with smoke. I love it.
The original cowl has a number of cracks after one flying season. Need a new and better one. I did a fairly good job of the original cowl and it still cracked!!!!!
Good flying with yours.....
RSN