Sleeving a 3G

Yeah, my parents bought an 04 Ram 1500 this past winter that keeps teasing me. I keep joking around with them that I'm going to "forget" to hit the brakes some day, lol. Apparently the head also has some dings in the exhaust runner from the sound of it, should I be concerned? The guy said he was planning to just do some light porting to clean it up. I'll probably go aftermarket heads eventually, but it would be several months down the road if not a little longer.