I emailed SLP about future products for mustangs and thought you all might be interested in their response (I emailed them on the weekend and had a response right away on Monday morning).
""Thank you for your interests in SLP Performance Parts and our Ford Mustang products.
SLP is currently working on our Headers and X-pipes as we speak (soon to be released) for the current model year. I'm sure SLP will have 2006 products similar to the 2005 Mustang (as long as Ford keeps life easy as carry over components, even so we will have products available).
SLP will have an X-pipe to work with our Headers, unlike the early models that we make "modular" to work with both stock manifolds and our Headers. Ford actually jumped to the table and did their homework for the new models, they have a nice pipe now, it's mandrel bent and works fine to be very honest
I hope this helps and best of luck if you purchase a new 2006 Mustang, we hope we can help your performance needs in the future
Sincerely,
Kevin Woodruff @ SLP Performance Parts
Tech/Sales Manager""
""Thank you for your interests in SLP Performance Parts and our Ford Mustang products.
SLP is currently working on our Headers and X-pipes as we speak (soon to be released) for the current model year. I'm sure SLP will have 2006 products similar to the 2005 Mustang (as long as Ford keeps life easy as carry over components, even so we will have products available).
SLP will have an X-pipe to work with our Headers, unlike the early models that we make "modular" to work with both stock manifolds and our Headers. Ford actually jumped to the table and did their homework for the new models, they have a nice pipe now, it's mandrel bent and works fine to be very honest

I hope this helps and best of luck if you purchase a new 2006 Mustang, we hope we can help your performance needs in the future
Kevin Woodruff @ SLP Performance Parts
Tech/Sales Manager""