Not sure about the steering bolts, but suspension I do have first hand of doing over the last couple of weekends.
Rear;
spring retainers most likely knackered if its anything like mine - they are a couple of quid each or you can make your own from thick steel plate. Spring mounting plates (on the axle) are held on with two bolts. I'd recommend liberal quantities of WD40 ro duck oil aroudn the head and on the thread the day before and a few mins before. Early ones are imperial thread, later ones are metric (M10 I think). Mine snapped off so I had to drill the remainder out and then I retapped one as I went off centre.
shock mounts, one of my inner bush steel sleves had attached itself to the mount, I ground it off but caught the thread, so again retapped from imperial to metric (M12) but decided that I'd buy a new one anyway (£20) in the prcess of taking the mount off I broke one of the long bolts which hold it on! The new one was already metric.
Front;
Shock bolts, tent to spin the entire shock, it's impossible to get a grinder into the bottom mount (although an air hack saw thingy might). You need a pair of those massive 'plier' things to hold it still (and pref an assistant to do it). I managed to round one out (despite lashings of wd40), so I had to attack the shock. I drilled a series of small holes 4mm all around and into the central core, I then opened them out with a 10mm drill. This then allowed me to remove the shock and witches hat so I could get the spring out. with the spring out I cut with a hack saw the shock flush, this then allowed the remains to slip out the bottom.
Witches hats (shock top mounts) tend to rust, I removed mine with the shock still attached and replaced them, I think it is probably difficult to undo to top nut if it's seized as you can't get much to grip on the shock shaft, so it may be easier to get new ones. The ring of captive studs that holds them down also tends to go bad as well so for the sake of a couple of quid each you may as well get new ones (make sure you get the nuts too as mine were imperial). I also had to grind two out as the nuts had turned to swiss cheese, it's possiblt to get an angle grinder or nut splitter in but be careful!
You don't need to remove the lower sping cups but it helps if you can.
It's really a lot easier than I've made it sound (if I can do it then anyone can!)
Matthew