Year One Engine Forward Harness

Thanks, reason I ask is simple, the harness for the '71 is about $150 and the correct harness is $700 and effing 12 dollars? Really?
Geez! Prices keep going up!
If you have the time and patience, consider repairing and rebuilding your original. You can by good tools, wires and terminals for less than that and everything will be correct. Wiring work isn't as bad as you may think if your relatively handy.

Take your harness off. Place it on a plywood board. Mark the board and take photos for reference.
Go to a local marine supply to buy some good quality wire by the foot for whatever needs replacing.
For hard to get colors, or to be more correct, you can buy from a place like RI Wiring.

Get a good crimper or crimpers for open barrel "packard type" terminals.
Get a terminal removal tool or tools.
Reuse the original connectors and buy the matching terminals for the wire size.
Replace only what is bad.
You may be able to reuse the harness wrap or may have to replace some or all.
Detroit Muscle makes and sells the foam seals for inside the firewall connectors.

Sources for Chrysler type wire terminals

Inline wiring splice clips........from the Dodge RAM service manual