Well if you are looking for a cheaper place to get 727 maintenance done, then look at Kelowna Flightcraft in Kelowna, British Columbia, Canada.
These guys will do c-checks, winglets, super 727 mods etc. You want new wing spar caps? can do them too. Cargo door installs, dougan air hush kit installs, flap droops, etc. They have Boeing approval for all sorts of things.
They did Donald Trumps machine a few years back, along with a list of others.
www.flightcraft.ca
Worth a look id f you are serious.
Aintsaying.