There are a lot of places you can start with engine dressup improvements for your 1999-2004 Pony, but probably the easiest and most noticeable enhancement would be an aftermarket Mustang Radiator Cover. All the 99-04 Mustang Radiator Covers we have in stock are made of durable stainless steel and are generally can be installed in less than half an hour, so you can get out there and show off your underhood styling mods as quickly as possible. And you will want to add Mustang Chrome Engine Accessories and Mustang Fender Grippers as well.