What year 914 are you trying to put Pedrinni's on? They were put on 72 and earlier 914's that have a different rotor than the 73 and later 914's. I have Pedrinni's on my 74 but had to customize a standard four bolt wheel spacer to make them work. I simply cut out two parts of the spacer where my bolts would go with a cutoff wheel in my dr~mel tool, actually a b-d wisard (sp)

. I wouldn't recomend using this setup for any autocrossing or hard street driving. In fact, if someone wanted to trade a set of Mahle's for my Pedrinni's I would be intrested.