ok so today i was scoping around on craigslist for superduties and i found this 03, 6 liter for 5500 bucks has 69k on it, says it needs an egr cooler. how can i be positive it is JUST the egr cooler and nothing else? i wouldnt replace it i would just delete it all together for 300 bucks but i want to make sure if i sell my truck it will be enough to purchase the new truck and have the extra money to do the delete kit. i dont want to sell mine and buy this truck that supposedly needs an "egr cooler" and have it end up being something more expensive. should i replace the oil cooler as well if the has egr failed? thanks in advance