Engine Change

[stroudjj]

'Hello Everyone
My plane originally came with a warner engine, but I have changed
that over to a ranger. What kind of paperwork is going to be needed.
It's a 175 hp ranger and everything is as stock as I can find.
I would think that this should be simple since both models are the
same. And was certified with the ranger. But with the FAA and data
who knows.
Who has made a change like this?
Who has a copy of the paperwork for this?
Any words of wisdom.

Thanks

John Stroud
N81324'