I think you can only purchase them directly from Densecharger. What year is this for if you don't mind me asking, there may be a better choice than the DC.
The Densecharger system was manufactured by John Demolet not too long ago - they are scarce now but can probably be found in the classified sections (Ebay, etc).
At some point, Mr. Demolet changed over from "Densecharger" to "Tunable Induction" (as seen at http://www.demolet.com ).
I love my original Densecharger 100mm kit. A quick glimpse of his new website reveals an available fenderwell 99/01 cold air intake kit and the full length verison...
"System # 4: Part # 960246MF
96-04 4.6 GT, Bullitt, Cobra 100mm meter forward system
[3] piece ABS ¼" plastic intake pipes with CNC'd MAF Flange!
[1] Polycarbonate high gloss black unbreakable cover plates
[1] Raven Black/Chrome Decal
[1] Green Filter #2374 ($75. retail price, lifetime warranty, stainless steel end cap)
OEM Sensor Safe Permatex
Instructions and Bulletins
Price:$129.00 delivered "
OR
"System # 6 Part #: 990146CFL also look over our NEW Stage2 Systems
99/01 Cobra 100mm Full Length System
Includes:
(1)Revised throttle body pipe (4.5" i.d. @ TB) (fits all aftermarket dual and single blade throttle bodies)
(1)Green Filter #2374 ($75. retail price, lifetime warranty, stainless steel end cap)
Complete 100mm Meter Forward ABS induction Pipes
You can also look into a JLT True Cold Air system. They are a very popular choice for in-fender CAI's. You can order it painted to match your car, or opt for one made out of carbon fiber.
You can also look into a JLT True Cold Air system. They are a very popular choice for in-fender CAI's. You can order it painted to match your car, or opt for one made out of carbon fiber.