(only some engine trans parts will work... most will, but inquire before you buy or product info indicates it will fit your 2002 Bonneville)
And there are a couple more, but they skip my mind ATM.
You can also swap a Supercharged top end on, but it will require a custom reprogrammed PCM. Parts required are all pulleys (L67 specific), SC head, Lower intake manifold, supercharger, throttle body, fuel rail, fuel injectors, and more.
You can get used Supercharged parts @ www.car-part.com
but most salvage yards won't ship to Puerto Rico.
BTW -Welcome Puerto Rico.