theres a HUGE thread on here I think from GSXR? which details this mod.

There are a few options for bolt in, but you will need the later 124 wire harness for plug and play. I used a 120 amp from later 124 but you could go for the 98-99 models and get either 143 amp or 150 amp. My 120 amp came with new pulley installed and was perfect offset so it bolted right in. But Ive heard the 143 amp or 150 amp may require you to remove your existing pulley and install it on the new 1. Its all detailed very well in the thread I mentioned.

The funny thing was the 120 amp I bought (from Ken at The Benz Store) was CHEAPER than the wimpy 70 amp unit. Ken also set me up with a used wire harness for extra $15 so the job was simple.

And dont worry about the belt, its plenty strong to drive the alternator, you wont have an issue.

So now my headlights are brighter, battery lasts longer, squirrel cage motor blows like a hurricane. Why MB ever saw fit to use such a low power alternator is beyond me...

__________________
Paul
Benz-less
I need an SDL !