Need the weather to bugger off so I can get some accurate measurement of the current pulleys & compare the new pulley, got some 6mm plates & a spacer tube lined up for the 2nd alternator mount build, I have my eye on a ViAir on board air system, 10ltr tank with twin cylinder piston pump, I like to air down the tyres and the little £30 eBay special lasted 3yrs so I had my monies worth out of it, bit of a chore blowing up all 4 235/85 cooper stt from 14psi back up to 35psi, but I am also considering using the alternator build as an opportunity to do an OBA build using an old AC pump so my mount would need to be big enough to incorporate the two units.
The more I think about it the more complicated I am making it!
But at least my crank pulley has 3 grooves in it should I want to redesign later, probably best kept on the simply side for now lol