You probably have a 6 cyl. or late cutch pedal they are totally different then a early or 340 pedal or V-8's. They have a baby spring on them. because they only have a 5 1/4 pin spread. There is also an extra brace to hold the stronger spring on the early 340 pedals.
If your going to make sure of anything make sure you have the correct pedal assembly for the fork your using. Short throw pedals short fork. long throw pedals long fork. I have them out if you need pictures
