My y2k quad cab doors are very quiet.
No probs with noise except sometimes if you don't get the rear door closed all the way before you close the front, then you'll hear alot of racket when you go over the bumps. Its not a prob if you make sure to get the rear doors closed completely first.
Also, Ive noticed that the seals around the doors are very good, and w/ all the windows closed, you need to close the final door harder, or the pressure in the truck will keep it from latching all the way. Not a complaint,just an observation.
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2k, 17k miles, QC, 4x, 6sp, 3. 54,285/75r16 bfg/at, stock air cleaner (reliable), silencer ring "in" (runs better), popup cmpr, 9000 lbs. 14. 5-16 mpg. VA, DD1's, PS Boost module, DD Elbow... also, Nitrous Oxide piped direct into the block (stealth - to keep the warranty), twin turbos, 10 gallon per minute fuel pump, ECM right out of Don Garlit's Top Fueler (he gave it to me) (for letting him ride in my truck), Super Modified DD1 Injectors ("Hand Honed" with a 1/4" reamer & my 12v Makita).
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More BOMBING to come!!