I found the stock Stage 1 blower on the 3.8L to be a bit lacking... So I decided to up the ante a bit. Still uses the stock model (I wouldn't have the slightest clue where to start), so don't expect a huge bug catcher on your V6 bingomobile. However you can expect to get all the grandpas attention with your loud blower and fair amounts of power. For Stage 3 it wouldn't hurt to equip the heavy duty block (I don't know how much power the stock block can take but I feel like it exceeds it). This mod really shouldn't interfere with anything else (or vice versa), but if you do find something let me know and I'll see if anything can be done about it.
For anything above Stage 2, I would recommend using the Stage 1 Block so you don't grenade the engine.
Superchargers show just under the stock Stage 1 with the 3.8L V6.
More superchargers for LeGran 3.8L V6 1.2.3
Because your bingomobile can never have too much power!