I also bought a 4' long silicone tube on eBay, three 2.25" mandrel "U" bends and some t-bolt clamps from NAPA. The rest was cutting, test fitment and just figuring out how it would all fit together. The intercooler assembly was mounted from the stock A/C condenser mounting screw holes using strip (1"x1/8") steel.
Cost breakdown:
Piping $70.85 shipped
Silicone tube $39 shipped
T-bolt clamps $28.50 (NAPA)
Paint $3.99
--------------------
Total: $142.34
Pictures: