The 5 pin MAF sensors use have an internal IAT (intake air temperature sensor) with the MAF. If you are looking to take the easy way out ZZ Performance sells a short adapter harness that has 3 wire MAF connector and the 2 wire IAT plug. If know how crimp pins on wire and insert them in the 5 pin connector let me know and I will post the hookup.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "