All of the above, I agree with as have had my 4/4 for 14 years & still take the long way home. However I often wonder why Morgan, never went down the Caterham route with the sigma engine. Caterham get the sigma crate engine, just like Morgan, but then change the camshafts & other things improving the torque & power.
Yes, I think they missed a trick there. In my search for more power I ended up going down the GM Ecotec route back in 2008, mainly because Kevin Vernon was offering a complete conversion/installation service. It's amazing how much power you can get out of a small 4 cylinder engine with variable valve timing, variable length inlet tract and an exuberant ECU map. Mine gives 165bhp in an 850kg package, which I've been very happy with.