> The >absolute best thing for you to do is study this web link >http://home.hiwaay.net/~langford/corvair/airbox/ which happens to be >Mark Langford's air box design and as best as possible duplicate it for >your engine. >Mark Jones
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Several of the pictures show Mark L. making a spring assembly to wrap the exhaust pipe to maintain spacing for the shroud and for additional heat transfer. There is a cheap, ready made alterative at the hardware store. It is the old style screen door spring that is 12 to 14 inches long and very tightly wound. Just stretch the spring to get the coil spacing you want and install it. When stretched beyond it's spring back length it maintains that shape. It has a connecting loop on each end that you can use to secure it with. It's not stainless but I figure you can replace it every five years or so for $2 or $3. Larry Flesner