Please contact us by phone before sending any parts for shop service; this includes parts for our performance kits. Do not send in any parts for modification prior to contacting us. Click here for a downloadable form to fill out and include with your order. Always include full name, return address, city, state & zip, daytime phone number and a detailed list of the modification(s) to be performed. Many of our shop services have options and levels for this reason prices will be quoted by each job.