Looked at mine today. The throttle cable part number is visible (14’).
The transmission cable part number is in the binnacle so I can’t see it. You have a 50-50 chance of seeing the part number depending on the how the original installer oriented the cable.
The throttle cable end measures approximately 18” longer from the end of the transmission cable. There is also some extra length (6” or so) on the throttle cable bend in the aft compartment so I’d guess my transmission cable is approximately 12’?
13’ may be the safer choice for the transmission.