Hello ,working on a 1973 340 Ralley Challenger , have changed to a 440 4spd car . I need to order a engine harness ,440 didn't come in a 73 ,will a 71 harness plug in ?? They offer one for a 1971 single 4 barrel or do I order a 1973 340 small block and modify it ??? Thanks Gregg

 

I myself would use the 73 harness and just work on making it if... It you need a little extra wire, then you will aready have the rite color from the old harness... Just My 2 cents..

 

Ok thanks ordered the 73

 

Cool Keep us posted....

 

I want to here it run!

 

Thanks hopefully in two weeks