Self levelling system bolts?

I had the s.l.s whipped off a couple of years ago on the 110, anyway the chap who whipped it off just cut the bolts.
I'd really like to put it back on but for the life of me I cannot remember or for that matter find any information regarding the size of the required bolts.

Is there by any chance anyone out there who can help me?.........please?

Sod it ,after recieving some sound advice from a chap in the know, I've decided to just stick some new springs on the back and not bother replacing the s.l.s after all.