OK so everyone loves Geno's Garage. I can see why and I will add them to my list of Diesel Favorites also.
For hard core ignition, high Performance, general quality automotive supplies I always call on Jeggs, Summit Performance. These two seem to always have what I need and at a very competitive price. Great places to order from, And as close as I am to them it is always next day service.
For Truck add-ons, lighting, body and style parts. . the guys at Truck Performance and Stylin Concepts are who I use most of the time. They have many sales and the service is great, order tracking and price matching.
LED's I like LED's-r-Us, and Autolumination
Tires, lift kits, shocks and winches have to go to 4Wheel Parts, NTW These two have many sales at can't be beat. Also there are several times a year that freight is free, that is a huge savings on tires or any heavy item. Also stand behind there products, good to work with.
And the funniest place to shop is Harbor Freight