On this subject, the 8130-6 is required for a major modification, like a prop or engine change, and has to be submitted to your local FSDO. I tried to sent it directly to OKC and they said no, send it to the local FSDO.
A couple weeks ago I checked the public data when doing a search of N numbers and noticed it still shows a Subaru engine, not Lycoming. So what gives?
There is a link on the data page to FAA records and for $4 you can get a print out of all paper work in the system on a particular airplane. The package arrived a couple days ago, many pages going back to original certification including the engine change. Evidently, they do not up grade the short public version of information and in fact there is a note to that effect. You have to request the latest stuff and they will send it a just a few days.