What could cause the head gaskets to blow on a 2003 dodge ram 1500?
Engine size, mileage, symptoms eg: I overheated it, etc...
Usually overheating it will do it. Even once can cause you grief. Is the cooling system working? Check waterpump, rad etc.
When i had to tear mine down, I found that there wasn't a huge selection. The gaskets on the 4.7 vary due to year and engine manufacture date and possible over-laps. The oem gaskets did work great and I have no leaks. (unlike my old fords and chevy's). Since there is a huge discrepancy in the year differences I would use the oem's.