I'm about to get a used set of Jethot Lts with emission fittings for my 96' and I heard something about the AIR connections not fitting. Anyone know about this and what do I need to get the install to work? Is it some sort of coupling?

 

I have a set on my car and the air fittings did not match up. The stock air fittings were to small, I called up JetHot and they told me the size of the coupler. I forgot what size it was but you can buy them at Home Depot. Now I have question myself , Does anyone know what size of bolt i need to thread into my EGR pipe fitting on the headers?

 

7/8 -18 is the size on my AIR fittings on my Jet hots. http://www.dormanproducts.com/ will have them, look under oil pan plugs.
They are not pipe thread or metric. At least on my headers that's true.

 

I'm not trying to plug them. I just talked to Jethot and they told me that they only had a problem on the 97' models and the late production 96' models. He said that I need to check them first and if there is a problem to call them back. Anyone know what part I'll need?

 

The 93, 94 and some 95 use the larger M22 thread (or something that's close enough for M22 to fit - they worked in my stock manifolds, in my JBA headers and in my AS&M headers). Some 95's, and the 96 and 97 cars have the smaller diameter fittings.... 7/8" or M18 seems to be a decent approximation. If your headers have the larger M22 size openings, you would need a "bushing" to allow your smaller fittings to fit in the larger hole.