Thanks for the kind remarks Greg, limodune and planekrazee.
I had wanted to use a RCV90SP for this model but after trying it in a Seagull 109, there just didn't seem to be enough power so I am considering changing to a Saito 125. Right now I'm a little on the fence about this and will wait for the Saito to arrive to see how it fits within the cowl before really making the decision.