What's the build date of your car? Early '68 Z28s got the 1111266 distributor, mine included. The problem is, finding an original 266 distributor is almost impossible! You'll have a better chance finding a 467.
I think you meant to say "finding an original 266 distributor is almost impossible and even if you do it will cost a small fortune"...
I don't peruse Fleabay much at all to have any idea how rarely they do come up - what they are up to these days now when they do materialize?