I hope to be able to make the tape or tongue new, trying to figure out what the material is exactly right now. I will have to look and see if Jim Carters still rebuilds them. I did see that Bow Tie Bits in Wichita KS offers the rebuild, makes me wonder what they are doing for parts. I may have to call and ask.
I have 2 right now I need to fix, so at the $175 each to rebuild, I can spend some time on it.

1937 GMC T16 468 BBC th350, 4.10
1941 Dodge COE 5.9 cummins, 9 speed roadranger
1947 Diamond T COE, hercules and 4 spd, all original
1955 Chevy LCF 9.0L IH diesel AT545
1962 Corvair (Elsie)
1967 Jeepster Commando
1968 K10
1970 Chevy C50 box truck