Yes you do! Once I decided to build a blower motor, I talked to everyone I could that had or had built one to get little tips from everyone, and out of 20 people, you'll get 20 different thoughts on the subject. The guys that were the most helpful were a lot of the professional racers at the track, I also got good advise from a local blower company that had been building blower cars for 35+ years, BDS has a good tech department, but their customer service is one of the worst out there. They won't even give you the light of day about advice, till you become a customer, then they'll have good advice for you and be pretty helpful.
The best advice anyone can give you is to talk to everyone you can that has a blower car, then use common sense to decide which advice will be best for you. Keep in mind how you'll be driving it, and how often you want to work on it, or rebuild it. Also keep in mind that just about everything in your engine will need some sort of upgrade to accommodate a blower, it isn't just a bolt on.
