Here is one that I have heard of others using with good luck. Otherwise the shop that I work at used to outsource alternator rebuilding to a company in Forest Lake, I can't remember the name but it was actually a common auto parts store. They rebuilt one for us that tested out at 210 amps at 4500rpm, but it was a bigger alternator so probably not that high for a DSM. Great turnaround too, they had it done in a day. If you are interested in that I would just start cold calling the auto parts stores up there and ask if they anyone locally that does that.
In either case, MAKE SURE YOU UPGRADE YOUR WIRE AND FUSE/CIRCUIT BREAK APPROPRIATELY!