FOX 36rx R/C Front Housing
The has tapped holes for the set screws that hold the carburetor in, which is a really sloppy it and you probably should use silicone sealer around the neck. This is the way FOX made them.
If you have a control line version, contact us. The had drilled the mounting holes out to accommodate the CL spray bar. We have found some with the boss milled for shorter spray bars. Another problem part from FOX.