Go to the RJM injection technologies web site with pics along with following info
RJM 5.0L EFI Harness Compatibility List
RJM harness is setup for 1989-93 Mustang engines, others may require changes.
Every computer has a main ID sticker on the connector.
The best computers are 1988-93 Mustang mass air:
A9L / A3M / A3M1 / S0Z / D3D1 / A9S / 8LD
A9P / C3W / C3W1 / A9M / A9T / 8LF / 8LG
The 1993 Cobra computer X3Z will work, but it has some driveability quirks and needs a special MAF sensor.
Some 1986-91 speed density computers from 5.0L Ford cars will work, but are not ideal for modified engines.
1994-95 Mustang computers will not work.
No truck computers will work.
The upper intake needs to point the throttle body towards the passenger side like below:
RJM 5.0L harness is setup for the early 1985-93 TPS connector, you can custom order any of the later connectors.
Crown vic part
The distributor must have the TFI Ignition Module mounted on the side. If you only have a pigtail coming out of the distributor, you need to get the other style. You can find the correct distributor on 1986-93 Ford cars and Trucks. Make sure the gear is correct for your camshaft.
RJM 5.0L harness is setup for the 1989-95 MAF connector, you can custom order any of the other connectors, but the MAF sensor must be programmed into the 1989-93 Mustang computer. If you are not using 19lb orange fuel injectors the MAF should be recalibrated or computer reprogrammed.
RJM 5.0L harness is setup for the early 1989-93 Fox body Mustang connectors, you can custom order any of the later connectors. If you got your fuel injection parts from something other than a 1989-93 Fox body Mustang you'll need to check these connectors as well.
"93" YJ 3.5 BDS, 5/8" Boomerings, 1"BL
33"x12.5" Ford 5.0 8.8 AX-15 231 SYE