Thinking of a long term project for when the future rebuild happens. ( If it does ). Thinking of purchasing a plenum and TB's to polish on my spare time. Are are the TB's compatible across all years and both models? Are do they differ from year/year and are NA/TT TB's and sensors backwards compatible with each other? Same ? with plenum. *Seach brings up lots of useless posts on this question
` 1990 NA 1993 TT |