Throttle Cable Setup on bulkhead....

[purplehrtchallenger]

Hey guys,
I bought a new (supposed to be correct) throttle cable from one of our more reputable dealers (I think it is right)...
The car is a 1970 Challenger....
well, when I try to install the cable, the square plastic male end is too small for the square hole in my firewall....
Was there a number of different connectors for the throttle to connect to the firewall?   
since the hole is sqaure with a tab, I don't think the previous owner 'fabricated' or midified anything.
Any thoughts on how to fix this problem?

thanks in advance!

PHC

[cudaguy71]

The hole in the firewall should be a square hole with small cutouts on the left and right side.