This truck was previously owned by my folks(original owners) in SoCal where the emissions laws keeps them running like crap and very expensive to maintain. I recently took ownership of the '04 F250 and did tons of research to find the best shop to perform upgrades and modifications, mostly for longevity and a little touch of performance. Mad Matt's Diesel Performance is an honest and highly skilled group of guys that not only know Ford diesel trucks, but take pride in their work. I decided on EGR delete vs upgrade. The heads were removed, sent to a reputable machine shop, tested, resurfaced and reinstalled with ARP studs. All gaskets, filters, O-rings and fluids are Ford Motorcraft. The oil cooler was replaced with Ford Updated oil cooler. I originally wanted to go with the external cooler but due to budget, gotta try out the updated version in which has good reviews. Rocker box gaskets, dummy plugs, fuel psi reg, blue spring and injector o-rings were replaced. The battery cables were in bad shape so I had them take care of that issue as well. I was in contact with Matt, weeks before my truck was delivered, scheduling a date to leave my truck with him. Since I had some time, I ordered a MBRP 4" Stainless Steel Turbo Back Exhaust system to be installed during the bulletproof process due to the ease of access for installation. They also installed a nice street tune. I'm loving it! Judging from the many posts, blogs and forums I checked out, the work performed was at an extremely fair price. I'd definitely recommend this shop and I'll be back for more mods soon. read more