jase76
Husqvarna
A Class
Stock TC449's seem to put out about 3-4 more HP than a stock TE 449's, they don't make a TC 511 so can't compare, they have single butterfly throttle bodies, different velocity stacks, airboxes and cams. Not sure about gaskets or anything else.
Price wise, you're looking at $450 for the cams, $25 for the airbox base, $280 for the TC throttle body (not sure if you need a new harness or any ancillaries), velocity stack to match the TB is ~$15.
If you wanted to get anal you could sift through the parts fiche of the SMR and TC to find the differences!
I'm going to do just that when I rebuild my 449 motor I reckon. Are the pistons any different I wonder?