Hi Dave. As to the Ohlsson side port, I can not say as I have never run one in stunt. I am not sure how to set the tank height as the needle spray bar is so far above the mounts. Actually, if they would work they are about the quietest sparkers. I have one I run on my Playboy Sr, old timer, and it works great on there and is not as loud as the others.
The Taurus is a large airplane. 68 inch span and 850 square inches. It will fly all the the old time pattern with ease. It fly's better than I do because it won the ignition event at Tucson 3 years in a row. All done with an Anderson Spitfire lapped 60. The first year I flew it on 67 foot lines, eye to eye. After that it was flown on 65' lines. It has been flown on ringed Spitfire 65's, Atwood Super Champions, Super Cyclones, and right now has an Orwick in it which is gobs of power. Oh, I forgot. It started life with a Fox 59 glow. It flew well with that, but not as good as the spark engines. The day I put the Spitfire on and flew the first flight, the grin on my face told the whole strory. It was love at first flight.
The only down side to spark is the extra weight from batteries and coil, but those can become negligable with the new battery technology which I have not gone to. I am using the Eneloop batteries as they work so well for me.
The other thing is noise. They just run better unmuffled. I also block the boost port holes on the ones that have them as they give a much steadier run for stunt. I use tank tin and a plastic tie to cover the holes on Spitfires, and gasket material with a tie on the Orwicks, and Cyclones.
Maybe someone else on here has flown a side port Ohlsson in stunt.