Ok so I recently did some research and found out that the mp90 supercharger is the best supercharger for its price (My opinion due to is high PSI and lower ATI compared to the m62). But I have some questions that I couldn't find on any forms on here or CCS.NET. Ok well my first question is I have heard them called mp90 and m90 is there any difference, does the "P" mean its ported or am I just a [email protected]$$, and they are exactly the same. Second question is I believe that it is not a simple swap so is there are forms that I haven't found that have instructions on how to install them. And my last question is where the hell do you buy them from I don't like to buy things off ebay (NOBODY SHOULD EVER BUY ANYTHING "NEW" OFF EBAY USED IS "OK") but I didn't find any on there either, I have also looked on craigslist and haven't found any in a 300 miles radius.