any dalbello dealer can order them for you and even if they aren't, they can get them through svst. but i'd suggest a dealer because they hopefully will be experinenced in molding them and should have the heat stacks and neccassary gear to fit you proper.
the stock liners aren't bad at all. i had a touch of heel lift but then again, i was a half size too big. this year im rocking the krypton pro with ID liners so we'l see how that goes. my local shop sells the ID liners for 250 if you need some.