Rear brembos on early classic?
 

I've already got the fronts taken care of and fitted, thinking of swapping the rears to brembos to match, but I seem to remember they arnt a straight swap, there needs to be a bracket added for them to fit?? I might be imagining this, so I'm after as much advice as possible so I can get the relevant bits sorted to do the swap without any issues.

Cheers in advance