I've just fitted a NOS ACS BOA to my 96 challenger 'cos the canti brakes would only work properly if the rear triangle was at 16". I had to drill the rear hole (I know I know fnar fnar) out to 10mm to fit it.
I bought it last week from BMX CITY in grantham. The guys there are really cool. I told him I liked mid skool and he let me wonder round the warehouse just nosing through boxes and boxes of Mid skool gems that he said he couldn't get rid of.
if you need anything mid skool try them out 01476 590550
www.bmxcity.co.ukP.S I know technically BOA's aren't mid skool but they work fckn great, proper flex free n solid.