If you shop around, you can always find companies that will give you the most discounted price. If you deal with installers (like Woodhouse and others). You will get the support for your product during and after the install. If you have a problem during the install, they are there to walk you through it. If a part need to be exchanged or replaced, they will take care of it. This is more than worth a few hundred dollars extra when you are working with a $25,000 engine.
Supercharger Mart or the 99 cent Supercharger store may give you the best price, but when you need help or have a problem you are on your own. Paxton technical assistance is
helpful, but wouldnt you rather talk to someone who installs
these all the time?
Just my two cents,