64 C20 clutch spring length and fork pivot clip

[Desert dog]

We're moving forward and hope to get the ol' boy started this weekend.
We ordered parts from LMC to rebuild the Z bar and lower clutch linkage.
My questions are as follows,
-How long is the clutch return spring from the fork to the frame supposed to be? The one sent is straight at one end.
-As I didn't realize the clutch fork needed a clip to retain it to the pivot in the bell housing, can I remove the fork to install it without having to pull the tranny?
As always your replies and insight are greatly appreciated.

Regards,
Desert dog
Still roasting in Tucson