Magnum Swap: Gauges and sensors

For the temp sender in my engine, I drilled a hole in the intake next to the factory temp sender and tapped it for 1/8 pipe thread. For the speed sensor use one from a 88-90 Dodge pickup truck, it still has a mechanical speedometer, but the old tbi unit needed a speed sense. I had a stalling at stop sign and general drivability issue with mine until I installed a speed sensor. The sensor threads onto the trans and has a cable output, but the output cable size is smaller thread than the original, so you have to adapt a dodge truck cable as well. Also make sure you tie in the original neutral safety switch into the pcm, at one point before the speed sensor my pcm was confused because when I was cruising it thought I was revving the engine in neutral. Mine is an obd1 swap, but I think all of that still is true for yours. Hope that helps!