The piece of pipe I am using is 8 5/8" long.
Aluminum is fine (its what the CTA is made from).
I would add a few coats of high temp paint for engine to it for a little extra protection.

BTW, the two silicone couplers that I am using are the X-3003 (on the MAF) and X-3004 (on the TB).


Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST Pre98 Zetec - Some Mods