I took mine to an old timer hot rod guy (what a character!) to have this done..I showed him the pics that Ryan had posted couple years ago about how to do it..I'll pick em up on Monday and will post some sound clips..I haven't seen many people doing this lately.
it's very inexpensive compared to buying slip ons and since the "Cadillac" converter, as I like to call it, is left in place etc. there's no need to remap the fuel...or that's what's ive always heard..if someone has any other experience here, please chime in..