you will find that most 1 7/8 or 2 inch header is going to have one tube that goes out thru the fenderwell...TTi is going to be your only choice if you want them all under the chasis...
He made that simple enough.
I had a set of the Hooker 1 7/8 years ago, I really liked those.
They fit inside the chassis, & was very easy to install & remove.
The bad thing is, they don't make them anymore.
I guess that Hooker doesn't run a standard 1 7/8 header anymore.
Looks like you have two choices, TTI or custom built.