I had a 105 amp alt and did a e-fan install and used the 145 amp alt from the same place you got your alt from , aklim did the post on the 105 to 145 swap and e-fan install along with part numbers , the numbers worked for the 145 amp so they should work for yours , when I said stock I meant stock 145 amp alt the 105 pulley is just a tad bit smaller than the 145 amp .
Again this section "My Offical E Fan Post" aklim .
Don't really remember on the pin count though , the 105 wires hooked right up to the 145 .
Hope you get it worked out , I know how mods can go sometimes .