The dimensions of the original spindle -
1.125" diameter, bored through 19/32",
No. 2 Morse taper, front bearing section 1.25" diameter, rear bearing section 1", bull gear section 1.125",
12-threads-per-inch nose (the threaded section being about 0.62" long) backed by a plain register 1.25" in diameter and 0.4375" long
- ... only changed with the advent of the new-for-2001 Super 7 Plus.