Jonathan,
I am interested in what scale you are looking at. I have some plastic 1/72 AWI. will these match up to your Perrys? Not painted yet, naturally, but If they work who knows.
Just so you know, I have the following in 15mm:
15mm American Civil War
15mm Napoleonics - French, Austrians
6mm WW2 Desert - German, English, Italian
Currently, working on 6mm for Force on Force
Cort N