This project is exhausting....

I'm sloooowly (and not so surely) getting my '66 Barracuda assembled. I bought it unassembled in December. It was originally a 273 2bbl auto & I intend to keep it that way. The engine seems to run fine (can't drive it yet). I have the factory exhaust manifolds, but nothing after them. I've always loved the unique rectangular Formula S 'box' IMG_20190807_145659832.jpg exhaust & was giving some thought to installing something that would at least resemble that in sound and appearance (I already know it won't match the S in performance). I've seen a Formula S 'kit' for around $1,000, which is a bit steep for me. Anyone know of a cheaper Plan "B" for my desire to have an exhaust that resembles an "S" instead of this pea-shooter??
Thanks!