Only difference is G60s have tougher front top mounts, but they're physically the same shape as normal MK2 ones, its generally a good idea to buy G60 top mounts when doing the suspention on a 'normal' MK2 anyway
One thing to note though, if it has the Synchro setup the rear shocks are different to normal MK2 ones!
Poly bushes are dead easy, a few hours per side along with some harsh language
It might be an idea to get a set of spare wishbones so you can just swap em over, but I didn't bother in the end!
I'd go for Poly all round as fitting is much easier, for OE you really need to get them fitted by a garage, especially the rear beam ones!
Wishbone bushes:
Getting the old ones out is the hard part! For the large rear ones, cut/drill/burn out the rubber center, chop a groove in the outer metal ring, then use a hammer & chisel or metal drift to bash it out. The front ones are a bit more tricky, I chopped the rubber lip off then used my pullers to push them out. A bench vice would make the job easier though, or a g-clamp could do it. You just need something small enough to fit in the hole which will locate against the metal slieve.
To get the new bushes in, chuck em in a bowl of hot water for a bit to soften, then smear a ton of copper grease into the holes and on the bushes (to stop em squeeking!). For the large round one, I found the easiest way was to put the bush on the ground, then sit the wishbone on top, and stamp on it! For the smaller bush they are supplied in 2 halves so just slip in easy.
1 tip for you though, before you do anything else check the metal slieves fit inside the mounting holes, I found my rallydesign front slieves wouldnt fit in the mounting hole on the subframe, so I had to grind them down with my dremel!
ARB drop links are dead easy, simply chop a slit along the rubber and they push out, then to refit I put the link on the ground, sit the bush on top and press down on it with my foot while I lever the lip in using a large screwdriver. Once its started just stamp on it to get them all the way in!
The rear beam is the most tricky to do, you can do it without taking the beam off completly though. Jack up the rear & support on axle stands, then use a trolley chack to support the beam. Undo the pivot bolt on one side, and use the jack to lower it slowly onto something which is large enough to support it at the right height. Then as per wishbone bushes, drill out the rubber part and then cut a slit in the metal slieve & bash it out with a hammer
Poly bushes then simply slide in place.
Problem with the beam though is the rear brake bias valve gets in the way of one of the pivot bolts I think?
