Call NW Power - (800)962-2616
They have 2 that will bolt up to your stock bracket (serpentine, right?) that are 155 and 175 amp.
The 155 has a higher idle output, 100 amp I think. HD bearings and assembly.
I will go for the 155 next time my bearings go out.
Hold on cuz I think it is over $400.
Dave
"Visualize Whirled Peas"