smoketitan, I haven't tried this touch paint yet,but I hear the dual tip pin at this page works good. It has the paint and the clear coat.
http://www.courtesyparts.com/titan/paint.html
Before you order, you may want to check with the touch up person where you bought the truck, I have seen them take out scratches for a nominal fee and you can't tell it was ever scratched. If the clearcoat is just scratched, you won't need touch up anyway. How deep are the scratches? They may be able to wet sand and buff. Any nice color, I am biased. Mine is smoke.