[86sleeper]

seriously man, you should come out to our bbq sat., i have been through your dilemma a few times and i could answer many of your questions.
I am glad to hear that you cancelled your order from JMS. I am not a fan of their mail order history.
If you want a perfect mail order centrifical kit i know the perfect place.
If you want a KB kit, it will probably be best to order straight from them, but the downside is you have to work with them on the tuning if you want to keep their warranty. Some shops have deals worked with KB that allows them to tune, but the kit and the install would have to be done through them.
The KB kit would be great for an auto, i was going to do the same thing, but i wanted a blower with a lot more lung capacity in order to reach my overall goal.
The KB would be a blast on the street.
Show up to the BBQ and you can check out my "little" centri.