Can't be great for the handling.
For the most part, the modifications done to hot rods will, at best, make you go faster in a straight line. There are also plenty which are purely aesthetic, and will actually slow you down, although hot rods are hardly the only category of cars where this sort of thing is popular. In any case, very little is done in most situations to improve streetworthiness, and this car would have to be a prime example of that, despite being supremely badass.
But the owner decides to take it out on the street anyway, where it brings a basketball game to a complete halt. Hopefully we just witnessed some young people being converted to gearheads.