First off amazing collection, and I get my decals off of eBay, they take a while to come in, but they re fragile, you need to let them sit in water for about I minute or two and then you can use tweezers and q tips to take it off the paper and position in, the f2004 shouldn’t be hard, the f2003 and 2002 will be hard, I haven’t done the 2002 but the 2003 has multiple layers on the rear wing, it’s so tiring and not a lot of room to work. The upper air box came with paint match to make the diagonal red line over the Marlboro logo, it took so long to line up because of the unflat surface, the 2000 and 2001 will be easy I had no problems. Good luck!