ok can i use the 88-91 si harness on the gar motor its has a skunk2 intake the guy that wired mine up did a shity job and i was wondering if i could us that harness insted of this hacked up one? would i have to add any extra wireing to the si harness? and also would i have to get the si dash harness to..? it dose have a obdo to obd1 conversion harness for the computer!