to get a new supercharger and bolt them up to your original engine and getting it to work properly will cost you a lot of money, you are better off to get the engine swaped!
However, if you want to try the cheaper and less reliable way, you can attain a roots-type 4AGZE supercharger from the parts shop, shouldn't cost a lot, custom some fitting brakets, sort out the cooling system, and most important add enough fuel (dont know how you are going to do that - but cheapest is to use SAFC and some bigger injectors etc.) and off you go. But it is never going to be enough with NA forced induction due to the limitations of the standard engine, at the end of the project, you are still going to end up getting a more powerful engine swap.
So good luck mate, and tell us how you are going