They look like a bulk reseller of multiple manufacturers. I didn't find any items that they manufacture. I always rather buy directly from the manufacturer or at least from a direct dealer.
They're a retailer, they don't do manufacturing. Corgrit's a legit dealer. I got my screen protection kit, Baja lights, and skid plates through them.
Corgrit exclusively doubles the factory warranty on items like bumpers/skids for free, and they have 365 support. I had a mounting bracket related question on New Year's Eve and got a response the same afternoon. Zero issues from me.
As for the Old Man Emu suspension, I'm aiming for around a 2" lift. I know some members in here purchased the Corgrit OME 2135K kit. We occasionally load the 4Runner down for trips and I was wondering if someone oculd chime in on how well it handles with packed gear.