You may want to check the VR4's...If I recall correctly, they were really short on performance for the buck. That's one of the reasons they're no longer around. They were super-heavy and only because of the 4 wheel drive were they stand-outs. How much are Stealth Twin Turbos going for...if ya can find any...?
You can do an awful lot with $14K. What about an MR2-turbo? Those were pocket-rockets. Or, get an older vette or camaro, tub it, then throw in a 383 Stroker or 502 big block. There's a LOT that can be done with 14 big ones. All depends on what you want in terms of car. Top speed, handling, drag, auto-x, etc...
I know that you can pick up '80 vette's (like mine)in the low $10K range with power everything and decent paint. The extra $4K can buy a lot of engine and other go-fast goodies.