Autoengineuity and Kennedy Diesel have true OBD2 bi-di pcware scanners for similar price, and I think so wester's also - if you're working on your truck, it wouldn't hurt to have a professional scanner with engine and transmission control functions, for about three bills.
BTW - they're not limited to the 6.5 - they are OBD2 scanners
BTW - they're not limited to the 6.5 - they are OBD2 scanners