ECE 6 lug to 5 lug converion

[69Deville]

Has any one used this conversion kit? Once I do the front end swap for disc brakes on my 69swb I will be left with the 6 lug rear end. I would like to run 5 lugs out back but am unsure what year drum setup to use with this conversion. Any feedback you can provide will be appreciated.
Quote of ECE web site:
1963-'69 12-Bolt Rear-End 5-Lug Conversion Axles, Bearings and Seals (Kit)
This kit is a direct replacement for your factory 6-lug setup and includes two 5 on 5" bolt pattern axles along with high quality American-made bearings and seals for a simple, complete installation.