Gert,

Love the Italian engines (how couldn't you), but a Japanese designed Blue Angel strikes me as deserving a Japanese engine - the natural choice being a YS FS round head. That VFR however looks interesting - only problem is that it is RE which doesn't suit the BA. I'd go with the regular SF if you have one (sounds like you do) with pipe slung under the wing.

My 2c, David.

P.S. Interesting build.