Not many authorized dealers here in Wis so I took mine right to Roush. Ten hour dirve but spent most of the week out there. Great tour of their facility, several times. Lots of places to visit. It ran me $2000 but that was to change out and install a forged short block. They also installed a HD clutch and upgraded the front sway bar. I had them put some new 275 Cooper RS3 tires on at the time, discounted. If you got a good trusted place like American Muscle near go for it. This was for my '07' but same difference, great power increase.
2015 Stage 3 Roush
'66' Ranchero w/almost done 302 T-5 swap
2000 4x4 Ranger
2003 4x2 Ranger
'69' Fairlane Cobra, 428 4-speed waiting for work