How custom do you want and how much money are you willing to spend. I have several friends that specialize in different area's to help with the interior on my truck. I'll tell you what I plan with mine and see if it may spartk some idea's for you. The seats are coming out of a 2005-2006 trailblazer SS. The only reason for this is the seats are leather buckets (black) with the vintage chevy SS embroidered in the headrest. I have a good friend of mine that can work magic with fiberglass. So he is going to help me with the custom center console. In the console will be a touch screen radio, my guages and controls for my air ride technologies air suspension. as well as the ignition key for the truck (I'm putting a push start button on the dash in place of the key hole) Also my door panals will be fiberglass with the speakers built into the panels. Also there will be leather armrest on the door panels to match the seats. I'm painting all the fiberglass to match the color of the truck (silver). I'm going to go with black carpet. I have a friend of mine that repairs and dye's leather, he said that he would try to dye some suede leather material to try and make my headliner with. I haven't really decided if I want to do that or not. I've seen it in a few trucks that way, but I don't know how much in cost I will get into. Suede is kinda pricey. I'm putting a billet alluminum steering column from flaming river in mine as well. The steering wheel will be from Boyd Coddington to match the wheels that will be on it. The door instep will have an aluminum strip on both sides that will have three long slots in them. When you open the door they will illuminate. On the door panals under the arm rest will be a tiny light that will illuminate as well when you open the door. I took those off of broken BMW mirrors. They will work well for they are bright but really small so they can be hidden very easily. This truck as you can tell will be a full out custom and may take me a little while to complete because of the $$$, but it truly is a dream of mine to have a show stopping street rod. I know a lot of people on here are original people, but like Nate told me, It's my truck and you should build it how you want it, so that's what I'm doing. By the way, if you need any technical advice. Nate is the man to talk to, very sharp. I hope some of this may spark a creativity side of you and just have fun with it.