Well I spent my first few hours under the nissan putting these in. Thanks everyone for the help.

Had a few shitty things happen along the way- I wish I'd had my tools here (im at the parents this weekend) so that i could better deal with seized nuts etc.
The rear bolts came free easy as once they were hot- you guys weren't kidding about the locktite
Its SO COOL how the bottom section of radiator shroud unclips so easily for fan clearance
Now ive gotta work out why i cant get her into 4L now (gears grind like its not in neutral)
Maybe i do need to adjust that linkage. hmmn.
phone Ross Bolus (secretary of the BOP club) He'll save you.