Hello all. I'm finishing a rebuild on a Bellanca 260 and really am looking to build an RV now. I have a Tripacer with the o-320 b2b sitting in my garage. My question is, has anyone built a -7 with the b2b? I have considered the -4 but I think my wife would like the side by side thing, duh. I would eventually hang an o360 but I have what I have... Thoughts?