http://coxengines.ca/cox-.049-.050-....-assembly.html
Small glitch its for the .050 look at this pic of two of mine for comparison a .050 and .09 RC engines note the .09 carb is a bit bigger.
You will have to use plumbers tape to increase the dia of the carb threads for a tight fit into the carb body.
This has been done by others. The TD .09 makes a lot of power enjoy! You can flare out the venturi some or source a tarno 1/2A carb.
