What power / torque gains have you seen from headers, specifically bassani mid length headers? I have an opportunity to but set of bassani midlengths with o/r x-pipe for $800, brand new. Guy bought 99-01 Cobra headers for a Mercury Marauder and they don't fit, and he will sell package for $800. Is this a good price. How bad is the install for midlenght headers? Do you still have to drop out the front end (like with long tubes)? Thanks for the feedback.