Power booster brake sets?

[b5blue]

   I see complete booster sets for 2nd gen's for around 350.00. https://www.ebay.com/itm/161544920345  Anyone using this setup? Years ago I converted out of boosted after a booster failed. With 11 3/4 disk and 10" drum in the rear this looks ideal. 
  Two things I do not see in the set is the spacer between the booster and the master cylinder and the spring that clips onto the Z bar's "dog bone" that the old set had. (Perhaps not needed.)

[Mopar Nut]

I paid less than that for a rebuilt dual diaphragm Bendix from Booster Dewey.