Been searching online about how exactly the engine + subframes are mounted - because since it's currently laying in mud, I dont want to be under there for any time longer than I
have to! And I'm quite pleasantly suprised!
All this information + pics were taken from http://www.bernardem...m/xjs/index.htmThe front subframe is held on by two HUGE bolts either side, which act as a hinge for the whole subframe, and is then held on at the back, by 2 relatively small bolts - then it's only really the sway bar, steering rack, and brake lines attatching it to the car!

The engine is held in place by two engine mounts (which are on the front subframe!) and then a singular mount on the back of the gearbox. The gearbox mount however, is apparently an ARSE to remove, as instead of the usual blocks of rubber to hold it in place, it's held there by a spring, which is uder quite a lot of compression - that'll be fun to remove! (just visible as the reddish bit in the picture) 4 bolts remove that
The biggest problem with the Jaguar XJ-S transmission mount however, is not it's design or devilish complexity, its removing it.
If not removed properly the damm thing could kill you. The spring is under compression, and the uninitiated might be tempted to just remove the bottom screws. WRONG. The entire assemble needs to be supported (spring compressed) before ANY bolt is removed.

Rear subframe is held in place by the propshaft (4 nuts+bolts) 4 rubber mounts (cut the rubber!) the swing-arms (one bolt each) and then the brake line and handbrake cable - the exhaust also runs through it, but that should be easy to remove

Only bit I'm not 100% sure about, is the centre bearing on the prop, as I couldn't find a single picture showing what it looks like, only a very badly written explanation of how to renew one - which was as clear as mud!
so, picking up the other half tonight after work, and starting first thing tomorrow, to disconnect the propshaft. Next step, will be to hammer a couple of holes in the floorpan, either side of the tranny, then tie a bit of rope through the floor,
around the gearbox. That way, when I undo the gearbox mount, it's not gonna fall around, and break things!
Not gonna lift the engine out, as after taking off the intake manifolds (which means taking apart loads of other bits to get to the bolts for them) the engine *should* be able to slip downwards through the gap in the bodywork, attatched to the front subframe - at least it means I should be able to wheel it around on the subframe, as I dont think the engine crane's gonna like being made to carry 300+kg through mud and VERY uneven concrete