I've got a pup still in the box that I was planning on powering with a Saito 60 twin (I think it'll just about fit in the cowl, although it might take a cut out or to get to let the glow plugs. Hopefully the weight of this engine wil mean I won't need to add any extra weight, which seems to be a common problem with the short-nosed "Scout" range.

From what you're saying, the firewall is flat, with the thrust dictated by the angles of the engine bearers. The Saito has a rear mounting frame, for bolting straight onto a firewall - would I (a) be able to add the require right/down thrust by packing the engine mount with washers/shims, and (b) is there enough strength in the firewall alone to support the weight and pull of the engine.

Thanks

John