From my understanding, 40 bolt holes are present in 18 and 19 reverse lips. The bolt holes are an industry standard so the bolt holes should line up given they have the same number.
I don't under what VSC means, but the Garson wheels I've seen are reverse lips (non-step). Given that they have the same number of bolts, the bolts should line up. What you should really be concerned about is the inner diameter of the lip i.e. Weds have a larger inner diameter than Works; Racinghart/Lowenhart/Enkei have a larger inner diameter than Weds etc etc. This is important because if the inner diameter is incorrect, the face will NOT sit flush with lip.
I personally have not yet got a chance to rebuild a Garson, Wald or SSR wheel so I cant really tell you what works with what. Your best bet is to contact a wheel repair/refurbisher or a vendor that sells lips that has experience with these brands i.e. MC3 Wheels, Wheelflip, VRWheels etc...
Hope this helps and good luck on the build.