l am interested in modifying my car up and was looking for some suggestions
i would like to know youre ideas for customizing my 2.0liter multiport injection 98 plymouth breeze

This was designed as a mid size economy family car and never intended for perfomance use. The 2.0 engine is the same as the Neon which has parts available and certainly a cat back exhaust could be found but you will need to be creative and make Neon,Avenger,and Sebring parts fit yor car.

l am not sure which engine u have, but there performance modifications available. Indy cylinder head makes an intake manifold for the 2.0 liter neons, this intake may fit ur breeze (providing it is a 2.0). If it is not Indy cylinder heads may still make parts for ur car, l am sure there r headers available as well. There r turbo kits available for the 2.0 & 2.4 liter engines & there were some 2.4 liter stratus (and PT cruisers) that were turbo charged. Turbo chargers haved turbo lag (time it takes for turbo to wind up to create more power) the larger the turbo the more lag Too much boost (or huge turbos) does require upgrading pistons, connecting rods & crankshaft. Keep in mind if u install a turbo u will need a special exhaust manifold, therefore installing a header & later turbo charging would render the header useless. Before doing internal engine upgrades like camshaft l would first upgrade the intake & exhaust systems. l would start with upgraded intake (cold air intake system & intake manifold) then go to the exhaust system.