68 4sp Shifter boot question (round vs square??)

[KevinK7]

I was looking for a shifter boot for my 68 (C20, 4sp 396 2WD floor shift)
The only one I could find (second photo) seems a bit rounder than the factory one in my truck which seems more square-ish (first photo).

Is there another boot being reproduced that has a more square shape?

I looked again, and I see boots listed for "4sp 2WD small block" or "4sp 4x4", etc, but even then the pics I've seen all have a rounder look. It may just be a subtle detail I can (will) ignore, but figured I'd check.

Thanks,
Kevin