Depends what she wants to do with the car. If she is just looking for something to cruise around in with good power for stoplight fun, I'd recommend sticking with older muscle cars (Nova, Chevelle, Camaro, Mustang as previously mentioned) but maybe also look into MK3 Supra Turbos, and late 80s/early 90s Z-cars. With the latter two, you'll be able to make big power on the stock powerplants with a little big of work, while having a more modernized chassis. That makes for fun driving events that involve turns and such.