Hey all - I currently have aftermarket shorties on the car ( got for a steal on craigslist) and looking upgrade to some long tubes. I've been looking at the ceramic coated BBK's - as their one of the best prices I've come across. What types of dyno proven gains can be found with the addition on long tubes vs. those over my shorties im using now (I don't know what brand they are, greyish no boldly visible brand stamps on it).