Sorry guys, I'm out of town for a spell again, and don't have access to my car. It became apparent that since I'm not using the original throttle bodies anymore, I may get one that is oversized for my FMII intake plumbing. Is this stuff 2.5 ID correct? it would be helpfull to know, as going to a 70mm tb the O.D. of the tb is going to be around 3" needing 3" id silicon plumbing.

Just a quick verification from someone would save my *** here, thanks.

As will these guys, as usual.
http://www.siliconeintakes.com/index...c02ddf6251f7a6

 

which FM version do you have?

 

FmII for Mazda-speed

 

I'm just guessing 2.5 In is right. I have a honda 70mm throttle body so I need to get a 90 adapter to 3" at the tb. thanks for the response, though, I got it. THanks!