I'd check prices from your local exhaust shop.
Speaking both as a customer and former service advisor at a shop, here is a few reasons I recommended TTI.
Not many exhaust shops----or techs-- can do "custom" exhaust bent from scratch.
The expense comes from bending the tailpipes.
If a tech bends one up and does not fit you are billed for that pipe.
What works on the hoist may clang and bang when on the ground.
Most shops will butcher the crossover and weld to the pipes just down from the flanges. Most prefer avoiding unbolting the flanges.
TTi did their homework and their systems fit perfectly. All the mounting hardware, hangers and clamps are included.
I did 3 cars already.
The flanges at the manifolds are super thick and fit perfectly.
Tip: get quality flange gaskets with the metal ring.
The gaskets in the TTI do not have the metal ring and I burned through them.
That is the only issue I had and partly my fault for not rechecking flange bolts.
The cost of the TTI system will be on par or cheaper to any exhaust shop that is willing to handle an old C body.
Some shop will quote a " I dont wanna do it" stupid crazy high price.
To save money and still get a decent system, you can just order the TTi tailpipes and related hangers and get your local exhaust shop to do the duals and install your supplied tailpipes.
But if their quote is the same as the TTI system just get the whole damn thing from TTI and install it yourself.
Hope this helps.
