Update: Posting as reference for others.
After having no luck finding a local shop I decided to call Waldron's to see if they would sell partial pipes/systems. To my surprise, the answer was YES
I'm not planning to run my system all the way back, I already have a set of Flowmaster mufflers, etc. so the critical piece for me is the DropDowns.
After talking to Ruth (very nice lady at Waldrons
she said they can cut the main pipe (that runs from manifold to muffler, ref photo in link) to whatever length I wanted. We decided on 5', so that should be more than enough to get me to where I'm going to place the Flowmasters.
The more I looked at all the bend detail as the pipes exited the manifolds, the more I was thinking it was going to look too "Frankenstein-ish". Getting the dropDowns from Waldron's will make this a whole lot cleaner and for just over $200 will still keep the system in the budget ballpark. Adding here, for pipes larger than 2" (these will be 2.5") they use 14 gauge, which is pretty solid.
https://waldronexhaust.com/product/1...With+Pipes+Cut