First... Is the mass air sensor from an S C other than 1989 interchangable with that of an 1989 S C as far as proformance is concerned ? ( I know that physically it can be done ) If profornance is effected adversly, can a tune fix the problem? If not, I am in the market for the correct sensor. Second...There are two wires in the wiring bundle to the oil pressure sender, one is blue which goes to the sender and a second, white with a red stripe which appears to be cut off. This wire is jacketed with a black covering which has 1.0w printed on it. I should mention that I replaced the sender and made modifications so that I now have a oil pressure gauge that works , not an Ford idiot gauge, but I don't remember cutting this wire. As far as I can determine, everthing works normally. Thanks for any info.