Actually, the spacing on the SAT30 doesn't match the usual Wilkinson stud spacing. The SAT30 comes in at around 2-15/16, and the Wilkinson VS100 (most common Wilk) is way narrower than that (2-1/4 if I recall). I think the Wilky is made so that the stud spacing matches the outer 2 holes on a standard 6-screw
strat style trem. So what matches 2-15/16? Beats me -- let me know if you find something that does!
Bert