After a recent thread where someone requested pics of top mount turbo setups, I wondered why most of the pro guys or mostly drag racing guys don't run top mounts. I read in that thread that a top mount is better for oil drainage and quicker spool. I was just curious why the guys that race mostly drag run them out the front bumper. I am getting ready to build my turbo mani and just wanted some input on it. I was going to run it out the front bumper as my car is mostly a track car, but I am debating a top mount now. Thanks for your input.