Anyone here know if there are any advantages or disadvantages in using the RD1992 instead of the RD1990 in an auto sedan? I don't understand why there are two part numbers for the different tranny types, but my assumption is that they should be interchangeable. The primary difference I have seen is that the MAF is moved further away from the throttle body on the RD1992. Will this make a difference in power between the two two intakes?