Man it feels really good to have this done. Another one off the list.




I also discovered the major source of vibrations in my truck. When I built my rear bumper and added the side risers, I built them really close to the body. Like REALLY closer. Call it beginners mistake. Then during BB2020, the body shifted toward the driver side and all this time that rear corner has been in full contact with the riser. Not to worry. I beat it back with the trusty prybar and no more contact.
Between the rubber body mounts, the new-less-rigid tranny crossmember, and the rear corner off the bumper, the interior noise levels have significantly dropped. It’s down to just engine noise, exhaust noise, and a few old truck rattles. Those are levels I can live with.
I’ve been driving my father-in-law’s gmt400 around for the last 24 hours and man someday I’m gonna convince him to sell it to me. Offroad Design has a whole catalog of parts I can use to build this into a really good workhorse.


I’ve got a few honey-do projects to hammer out over the next couple weeks, and then it’s finally time to get this turbo installed. It’s been a long time coming.
Which brings me to my next thought-provoking decision: exhaust.
Earlier I said I would ditch the dual glass packs and switch back to my MBRP, but I’m back and forth. I’d like your thoughts and opinions (old photos):
1. I could keep the glass packs, and run a 2.5” or 3” pipe from the turbo to the glass packs, and be done.


2. I could run the MBRP Quiet Tone, and build all new 4” exhaust all the way back to the tail of the truck.
3. I could run the MBRP, and have it exit right before the rear axle, like it did before.
I’m looking for quietest note with maximum flow. I imagine that’s going to be option 2. Which is what I’m leaning towards. I remember y’all saying before that the single 4” pipe will have more flow than the dual 2.5” pipes. Both muffler styles seem to be on par with one another as far as note and loudness. And exiting as far back as possible, behind the rear axle and tire, will keep interior noise levels down. This option may however require repositioning the rear shocks so that the larger 4” pipe has more room to navigate those tight spaces.
But if it’s not the right decision, talk me out of it.
Andy