A727 DipStick length?

I have a hughes 67-TF8 Street/Strip ( A727) trans. and want to install a Lokar SS flex dipstick so I can mount it on my firewall. The current locking dipstick is down by my headers and I burn myself when checking fluid level. (also the previous owner made the comment that he wasn't sure if the current dipstick was the proper length as he had changed it). What would be the proper Lokar dipstick for this transmission? The current dipstick measures 19.750" to the ADD line from the "stop" and 18.750" to the Full line. A friend has a Lockar dipstick that I can get that measures 27.500" to the ADD line from the stop and 26.750" to the FULL line. (it's longer because it's meant to attach to the firewall.