Dipstick tube

[candphall]

Question is the FMX and C6 automatic dipstick tube the same diameter where it enters the transmission.
I have a 69 with 351 Cleveland and C6 transmission the C6 is leaking around the tube. But I am using the tune from the original FMX.
thanks
Chris

 

[horse sence]

Not sure about the size but it is a simple o ring on the tube that seals it ,should be able to get at any parts store