Why do you 'need" a carb, intake and exhaust? If yours is missing, there are literally thousands of original equipment items available at very reasonable cost (sometimes free from a sucker who spent $1325.00 he didn't need to), and those originals were engineered to actually work right, not line some vendor's pocket with your hard-earned dollars.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!