well my first question is this... what engine is under the hood? second, are you doing a custom turbo or buying it as a kit only because the programing involved isnt easy and will cost lots of money. as with suspension, always a good idea. check with BMR Fabrications on that cause they make loads of parts for different cars. also energy suspension for bushings. as with the exhaust, dont goto autozone or some place like that and buy some muffler that says performance, get something like flowmaster or magnaflow or anything that is low-ristriction. also get rid of the resonator and dont goto 3" on the piping, dont want your gasses to scavange back into the engine. your local muffler shop should do everything for under $200 if you supply the muffler(s), or, if you find anything that is a complete kit that you want to splurge the money on (oftin they are pricey) then i would say go for it and have a fun DIY session (they just bolt on no welding). but yeah thats all i have to say about that. i will keep a lookout though for a turbo kit for malibus though and if i find one ill pm the site to you.