i thought it cost way less than this? what is up? i thought you just take those 2 plastic covers over the cam gears off and put new ones on. the guy said that the turbos and such get in the way and that you have to dissassemble the front of the engine or something? he said about 5-6 hours labor and parts would be about $550. any thoughts? also if i am not sure on the status of the maintenence but the engine seems to be running well what else would be a good idea to replace before a 1700 mile trip. i am going to sell the engine so i do not want to spend a ton of money. thanks.