Got a decent session in the garage on Friday night though and managed to get the engine in the chassis :)
I still need to either remake the engine mounts, or rework and finish off the ones I've got (following my 25mm offset - see earlier post), but they'll do for now!
It feels like a massive step forward having the engine in place :) and it opens up lots of other jobs I can get on with now (exhuast, intake system, engine wiring, cooling system, etc, etc... Not sure where to start!).