This is probably a dumb question, but I'll ask it anyways! When looking for a tip do you just get whatever you think looks best? Are most of the tips the same size where it connects to the pipe? Also, does whoever installs the pipe cut it to where you want or bend it if you want it to be bent? For instance, if you want it coming out behind the tire, does the shop who installs it bend the pipe to make it do that?