Lol, exhaust kits are available for these trucks everywhere, and they are made by the same place and rebranded to suit a seller, buy from whoever...

 

I've no experience with Leroy's kit, but I've had the 4" diamond eye aluminized set (crossover, downpipe, muffler & the rest) on my Suburban for almost 12 years, it's been problem free.
Not sure if it's still available.
Just driving in typical every day use, it's relatively quiet in my application, except on cold starts, hard acceleration, or under load.

 

I've no experience with Leroy's kit, but I've had the 4" diamond eye aluminized set (crossover, downpipe, muffler & the rest) on my Suburban for almost 12 years, it's been problem free.
Not sure if it's still available.
Just driving in typical every day use, it's relatively quiet in my application, except on cold starts, hard acceleration, or under load.

Are you in the rust belt?

 

DE not available any more but Summit Racing's brand is a clone to it.

 

I just installed a Leroy Diesel kit on my '96 last week. Diamond Eye crossover and Summit Racing for the rest. Fast shipping, ordered on a Friday, got it Monday (East coast to the west coast). It came with zero instructions, crossover and down pipe were easy enough, just make sure you remove the air intake box on the passenger fender to get easy access to the V-clamp. The rough part was the hangers, they didn't seem to match up with mine, but I did get them to work and nothing rubs on the frame. Sounds great (back by the exhaust, it sounds like a beefy V8, by the motor still sounds like marbles in a blender). Lots of power now, and the engine seems to run a bit cooler climbing grades.

 

Heartthrob out of the Twin Cities area used to sell an aluminized steel 4" 6.5 exhaust system. It's what I've had on my '98 K2500 Burb since 2013 (with minor modifications during installation - like cutting the OEM hangar rods off of the stock pipes and rewelding them to the supplied exhaust clamps to maintain the round rods instead of the flat hangers, and using a couple of rubber strap-type hangers that clamp to the pipe in a couple of other locations for further exhaust support for my own peace of mind, and also cutting the intermediate pipe shorter to accommodate the 'Burb's shorter wheelbase vs. a longbed crew cab, as the kit is semi-universal). I've ran it with both their muffler and as a straight through exhaust, and I actually prefered the straight through exhaust, using the stock rear behind the wheel tailpipe location of the 4" kit, for the "in cab" tone.

 

Back around 2005 I did the same for my 96 Suburban. Except I purchased the stainless version from Heartthrob thru SSD. . The oval straight-thru muffler in the kit was far too loud. Eventually settled for a Donaldson muffler originally spec ‘d for a 5ton truck.

 

Had Leroy's exhaust on for about a year or more, No problems. No rust here in the south west