You don't need a pipe bender or to know how to weld. I installed two different DIY kits without a welder or a bender.
If you want bends, get onto http://www.jcwhitney.com
and get them in a wide variety of diameters and mandrel (even) bends. Buy a hacksaw and hand cut them. Line the sections up with duct tape for test fitting, then use a permenant marker to mark line-up points. I used a line with a corresponding letter on either mating edge. Then take it to an exhaust shop and tell them to line them up the same way and tack them together (tacking are just tiny welds to hold it together in case you need to break them for repositioning).
Then take it to wherever on the car and see if it fits. If it does, tell the exhaust shop to weld it up all the way. BAM, you're done.
Intercooler piping is even easier. Go to a NAPA truck parts store (for the big diesels) and ask to poke around in their truck radiator hose bins. There's lots of premolded shapes to choose from. I always manage to find a hose with about two or three different bends I can use. Some of the bends you can find will help you get around tight spots. And in combination with jc whitney exhaust pipe sections and bend sections, you can make whatever airpipe configuration you need.
Image has been taken from http://home.earthlink.net/~turbogus2/cooler.html
Courtesy of Thomas "Gus" Mahon, 1948-2002 RIP
Gus was the king of ghettorigging, and this was one of his best contributions. His tip to me and mine to you is to take 45-degree bends and use them to make even less sharp bends. Depending on where you hacksaw at in the middle of the bend, you can tack up a straight piece and redirect the angle even less than 45.
Oh, and Turbonetics can sell you the turbo stuff to weld on. Also something the exhaust shop can do. Turbo flanges, BOV flanges, etc.
1994 Ford Thunderbird 4.6L LX V8
Bone stock engine, *partial* Xenon Body kit.
PLZ HELP ME FIND A XENON FRONT LIP
I also own some Turbo Dodges, a couple turbo DSM's, a few turbo Nissans, a Toyota pickup, and a supercharged VW sportcoupe.