I've got an older used IF Deluxe on the way that I am (of course) going to run SS. I emailed Indy Fab, and they said they don't modify frames as it would be prohibitively expensive and suggested I run an Eno. I'm considering this, but would really prefer to run a cassette hub if possible. What do you guys think? Would it be worth contacting another frame builder to add track forkends, or maybe an EBB and a disc mount? Should I stick with an eno and suck up dealing with freewheels? Does anyone know how the Eno grips pre-disc Indy Fab drops? Any other suggestions I haven't mentioned?