hey everyone, my name's Donnie, i just bought a black 98 gtp coupe. 100k miles. her name's Elenore. she's bone stock at the moment (except for smoked taillights and a trunk debadge). replacing the fuel filter and spark plugs this weekend just in the name of maintenance and gas mileage. Was thinking of starting with a CAI, exhaust, scan gauge, PCM, 180* T-stat, mayyyybe headers down the line. any tips? thanks in advance!