Isn't 1994 the last year for HB-1s? Nut width seems a little variable b/w 1-5/8 and 1-11/16 throughout most of the HB-1 era, but I think the truly wide necks tend to be pretty anomalous until you get into the 2000s, and, even then, seem pretty random.
My 1994 X-700 is a solid 1.75" but most/all the other 1994 models I've seen were narrower. I think you're just going to have to obsessively check listings and/or PM sellers.