A727 Rebuild kits redux - Rebuild kits everywhere (62-70 vs 71+)

hello ,,,great thread.....i have a 69 727 that has striped safty ,light switch.. also leaks some wear i can't find... anyway it has a new rebuild with good stuff.(( less than 25 miles )...i have a 77. 727 trans..i know nothing about it,, but it looks dry ... no leaks..i want to use the stuff from the 69 into the 77 ...any suggestions would be app.. thanks tim