How to place an order for the Turbo upgrade kit?
From the post linked above:
Quote: Q2) How can I order the Mk2 amplifier or Turbo kit? A) Please e-mail us ( firstname.lastname@example.org  to confirm the quantity of what kit you are ordering, your shipping address, and a contact phone number we can provide FedEx so we can send on the appropriate invoice. We have settled on a flat rate shipping of $20 for the amplifiers and $40 for the woofers ($60 per Turbo Kit) within the lower 48 states. We e-mail invoices hosted by PayPal. You can either pay with a PayPal account or if the invoice goes to an e-mail that is not tied to a PayPal account, you can select "pay without logging in" and pay with any major credit card (for orders less than $2000). If those options don't work out for you or you prefer to process are card over the phone, simply give us a call at 773-290-8436 and Kelly or I can process your credit card over the phone after we have sent an invoice. Sending us an e-mail with the shipping and contact info is much quicker and more reliable than taking it down over the phone. We are not currently offering Turbo kits. We will again once we have the new woofer which will also fit in the original cabinet without the need for spacers. The MFW Mk2 amplifiers can be shipped back to us (5 lbs packed) and re-programmed for use with the Turbo woofer when they become available.
Seaton Sound, Inc. email@example.com 773-290-8436