Need some help picking a cold air intake for my 5.7 swap.
It's a crate motor and the Mopar instructions say to use 3.5 inches and I measured the throttle body to be 3.5", so that makes sense.
I see on EBay all the systems for the 5.7/6.1 indicate its 4 inch tubing.
I contacted several sellers asking what the diameter is for the silicone elbow that attaches to the throttle body and all respond with 4".
So does that rubber elbow crush down to 3.5", doesn't make sense, either the systems they are selling as factory replacements have an elbow with 4" to 3.5" and they don't know what they're selling or it really doesn't match the throttle body size?

What have others done for this?

Sample

5.7 cold air