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This is the Plan I purchased a set of reducers to slip on to the headers cut the stock exhaust pipe slip them together bolt on to the car and drive it to the muffler shop to get done right.
3 inch tubing from the headers back to a new 3 way cat to my cat back Magna Flow LT1 mufflers I just hope this will give the car the meaner sound I been looking for the Magna Flows are just loud enough for my taste for a vett.
If is not what I looking for either have the muffler shop build me a cat back or Corsa System but I still think there way over priced.
I have a diffrent cam in my 357Cubic inch 356 HP 462 TQ motor but the Magna Flows make sound quit and stock I hopeing the Headers give more of meaty sound to it.
I looked into changing the cam out for a 219/219 LPE cam but the cost $1000.00 to swicth to roller not worth it and only piclking 5 to 10 H/P doing so.