I did see one of the 105's today, but didn't look (or notice) if it also had a bolt-on flange to hook to the LNB.
If not, then it's circular and on the wrong part of the band.
(...of course, if it's circular you wanted...)
If the pipe is removable, then you bolt up the FSS lnb and go to town.
I still want to get my hands on the 121/119 assembly, and see if it makes sense to slice them apart with a band saw...
There were a bunch of DPP44's, but without the power inserters (I could ask).
They were over twice as much as the DP34's, so I didn't take one hostage right away.
The switches are way more robust than the cheapie diseqc junk, but the LNBs are not the lowest noise.
So, it's a trade-off.
I guess the bigger-dish syndrome trumps deaf lnbs and lossy switches, huh?

...or.... "hey buddy, can you spare a PrimeStar?"