Originally Posted by NJ 1161
To be honest I doubt if they will be able to advise. Trial and error I'm afraid!
Just had a quick read up. It appears 75mm will take up to a 12mm spacer. 90mm you need at least a 5mm spacer for it to work.
Im thinking of an open ended bolt as i want the studs to sit proud of the bolt so it seems 90mm is best for that.