Well. Purchased my plane ....

The hobby shop had the Great Planes and the CMP Cessna in stock and after looking at both carefully opted for the CMP Cessna, quite beautifull with the fibreglass fuselage.

Anyway, the engine/muffler does not fit without having to cut away a fairly large portion of the cowl for the muffler, so pitts muffler it is.

A friend at the field had a Mustang also with an OS46AX and a Slimline Pitts muffler. Looks nice and also has a very nice grunty sound to it :-)