alternate engine in Falco

There are many aircraft that allow for a variety of engines. Some
engine makers even supply cowling/nose bowl kits for popular types
(Rans, Vans) etc.

So, what do you think of using a Jabiru 5100 (8 cyl) in a Falco in
place of the Lycoming io-360?

Jabiru is narrower and less tall, but is a few inches longer (but
might fit in an unmodified cowling given the different mount design).
Similar power, lighter weight.

I have heard the guys at Sequoia are a bit sensitive about even basic
unseen mods, but what do you guys think?