All he needs to do is order the kit for his trans type. The only diff in the kit is the type of speed sensor used. I've installed several of these things using electronic speed signal from the ECU and cable driven signals using the kit supplied speed sensor.

If installing on any vehicle that does not have an electronic Vehicle Speed Sender (VSS) or does not have a GM- type speedometer cable please order the CRS-3000-4165. The CRS-3000-4165 kit includes a magnetic drive shaft senders where magnets SEN-4165 are attached to the drive shaft to create a speed signal.