hi mate just read your thread about you changing your own clutch.
I have just done the same and it's not as difficult as you might think.
Mine is the pull type which i assume yours is as you mentioned the clutch pin clippy thing.lol
it is a R clip and a twat to get out. just use some type of hook type tool, i made my own but a hook type windscreen fitting tool would do, the clip pulls out towards you.
Also just let the clip drop in the bellhousing you can get it out later, now the clip is out, you need a tool to push a rod out that the clip goes through, i made another tool to do this i welded a 1.5" bolt to a 6" to to make like a L shape prising tool and used that to prise the rod down in the bell housing, the rod goes downwards.
Now onto the starter bolts the top one is a swine to get out and back in, not really any tips on this just struggle.
The top 2 bellhousing bolts can be got at once the box mount is off and the box is angled down slightly you can get to them with about 2-3 foot of extensions, i had to use all the extensions i had using step downs from half inch to 3/8s to quarter drive PMSL
As some one mentioned the box needs to be turned, not to bad to get off but a **** to get back on, you seem to struggle for hight, like you can't get your box high enough without it hitting the drive tunnel, you need to turn it to the narrowest side as about 20degrees or so.