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intake spacers are a waste of money...just get the whole tb...thats my personal opinion though.
intake spacer? hopefully you're meaning throttle body spacer b/c the intake spacer is a dyno proven mod... 2 hp 7 ft lbs of torque, doesnt sound like a waste to me. besides it was one of the best bolt ons i ever did. also find me a dyno graph that shows any bump in power from a throttle body on a basically stock car, then i will change my opinion...not to sound skeptical or like an ***.
I agree that you really don't want to put a bigger throttle body on a almost stock V6 engine. I almost made that mistake myself, but I've heard a lot of negatives about going with a TB to early in the mod process