Yeah it all worked out. So I had to put the stock 601 pulley on the lathe, and turn the outside of the hub down to size. So it is a custom job... Also, that Nissan Alt uses no key on the shaft, so some red loctite was put in place. Had to slot the stock lower bracket over 1 inch ( the mounting holes that hook onto the block). Still uses the stock length belt. The worse part is getting a good tight spacer-between the bottom lugs. A lose one, makes the case warp a smidge when tightened up.. This is a problem with all Alts of this mounting design... Just got back from a huge adventure to PA. Was the import cars show in Carlisle, between that- and picking up a on the car wheel balancer. It had to be over 500 miles round trip. The new Alt did fine, at one point what appeared to be a tsunami dumped on the interstate. Thankfully I had enough charging power to use those fog lights.. Couldn't do that before. If you look closely at those bottom lugs of the alt in the picture, this is just like the stock style. The gm type don't have this, so it will need a special bracket. To be fair the one I chose is not a perfect candidate, besides the fact it needed machining, the bat charge wire comes directly out the top. Some creative insulating was done-it rubs the carb bowl..