well, you could always pick up a stingray styled frame (like an olde stingray...not an occ stingray) and chop the head tube to lay it back. this will give the forks some chopper rake. then you can buy some chrome chopper forks (24" or 30") off e-bay for about $50.00 and put them on the frame.
the problem is if you are able to cut the head tube off, and re-weld it so that it's not only at the right angle, but straight and strong.
another thing you could do is just keep your eyes open for a chopper bicycle (craigslist is a good place to find them cheap). you just have to be patient and watch constantly and wait for one to be listed on there.
I have no idea of what skills you have, so it's tough to tell you what you can do.
there are people who can make their own frames from a pile of steel tubing, and there are other people who don't know how to tighten a chain.
by the way, my occ chopper has a 41 tooth rear sprocket. it climbs hills good without loosing speed. there are 2 big hills in my neighborhood,..maybe 20-30 degree inclines, and they are both about 150 feet long. my chopper climbs them with no problem at about 15-20 mph without loosing any speed. My bike tops put at around 32 mph on flat ground with me on it (i am 5'6" and weigh 150 pounds).