Obviously you have seen the list price for the cams. If you dont have Uprev w/Osiris tuning software factor that in. Install can be anywhere from 500-1000 dollars depending. gas mileage.....quit calculating that a long time ago. Overall suggestion........if you love your titan and want to add some good HP then do it. if you trade or arent sure if you ever will.....dont get them, the money wont ever be recovered. I love mine, the truck pulls so much harder in the 4-6k rpm range than you can imagine.