Well goodness, Thanks guys... Well, what seemed to be a good match for the scale (1/48) seemed to be the K&S 15037 .006 round brass tubing. The best place to find this (if not available at LHS) is www.hobbylinc.com . They have nearly everything I've ever needed , fast shipping, and reasonable prices. I try to keep a varried selection on hand and they even had a 1mm size I needed one time(very small tubing!) Any way, I played around abit till I got the right length, and bent over a 1/8 dia drill bit, not quite 90 deg, which tends to flatten the body while leaving the outlet round. It can be cut with a razor saw blade, but I used a Dremmel cut off disc. taking a pair of micro needle nose pliers, squeeze the outlet abit to make oval shaped, use a micro file to clean out the burrs and check out fit. If satisfied, i squeeze the end to be glued a bit more to flair it out some more which makes it a nice snug fit in the exhaust slot in the cowling, apply a drop of CA and repeat until all are installed. Simple, right? LOL... But to me it come out like I wanted and I like the look.
Thanks again, and I hope that helped!
Doug