Gordon Import cables are TOO small. they do not reach the carb so people have added to the length. I have a roll of throttle cable and I just add a loop or a lenght, and bring back to his cable att. with cable lock.
originally the cable comes threw where spring is hooked and cable lock screws in there, spring should be in other hole
Muffler again his are wrong shape, should be fatter and shorter, wrap a 1 by 1/8 inch steel bar around muffler and clamp to front bracket.In this pic I have welded it to muffler.
Thanks Gord! Scott at Gordon Imports was kind enough to send me a pic of the linkage on their original/unsold car - matches exactly what you described!
I guess the original throttle cables were longer as you say. Great info as always - CONGRATS on finishing the red car!!