I have a Byron F-16 kit and will be building it for turbine use, also. I managed to get one of the inlets that Nicolas @ SpiderJets used to offer in the turbine conversion kit that he offered. I have also seen somewhere that a YA F-16 inlet can be modified to work. Some have been built with no inlet.

It depends on who you talk to as to what modifications are required. Some are heavily modified (and thus are heavy) and others have been built with little modification. I even heard of one that was flown with no tailpipe. I hope the turbine was close to the aft end.

Good luck.