You can order directly from the website through PayPal. I did not have a direct phone number, but I got one when I placed the paypal order. I would just shoot them an e-mail from their website as I think the phone number that I had was Zack's private number rather than a business phone. http://www.powerperformancemotorsports.com
I just got mine a couple of weeks ago and DAMN what a difference!!! I am completely satisfied with the product and customer service level. Big thumbs up from me!!!