Small super charger for a 1992 2.9 Ranger

Gang -
I just got a 2.9l ranger and it is a dog on the highway. peppy around town, but I'm in forth trying to keep it above 55 mph. I understand that the best way to improve the performance of the 2.9 is to replace it, but the motor is sound.

I don't know much about forced induction but I am looking for suggestions on parts and kits that would provide a low amount of boost that won't stress the block too much. Does anyone have any suggestions? Did SVO ever make a wimpy factory supercharger for smaller motors that I can work with?
- Thanks
 
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