I don't think it was necessary.. I'll check on ours. McLeod Racing & GTR High Performance helped us on the install with the McLeod Racing Street Twin Disc Clutch w/ Ceramic Discs & Aluminum Flywheel.
Exile Turbo Systems' Twin Turbo System w/ Granatelli Motor Sports modified MAF pipe
Barton Industries Short Throw Shifter # 2011BM-2
SCT X3 Power Flash Ford Programmer # 3000
Hellwig Front 3 way adjustable tubular Sway Bar 1-3/8 inch / 35mm # 56705
Hellwig Rear 3 way adjustable tubular Sway...