exhaust woes ......1973 340 into a 1965 barracuda

I am running the TTI headers on my 360 65 Cuda. If I could go back to before I dropped the $800 on them I would just run the stock 273 manifolds. The TTI are nice, but really make it a pain the work on anything located on the drivers side of the car. I am actually in the process of building a 273 or 318 for the car that will be a basically stock engine for the car to make it more enjoyable to cruise and work on.