Yep. But OP said "Tell me the fastest cars I could buy for under or around 50k."If you want shit handling and braking, and just in a straight line.
I could build a faster car for $5,000, depending on how much needs to be upgraded. I built up a 360ci from a short block, added a big cam, ported aluminum heads and 750cfm carb and it dynoed at 447 horsepower.