With respect to the engine, I got the engine mounts fabb'd up and inlet manifold modified to reduce the height by about 40mm (hopefully it will fit under the new bonnet from Saturn but I've not bought the bonnet yet so can't check) there's a thread on here somewhere with some pics of the mod, other have completely replaced the inlet manifold with a custom design (see Enoch's he did a good job on this)
Rapid