Quote:

If the front sections (between collectors & X) have different lengths before & after the bend, turn them around. Putting the shorter length into the X narrows them, longer length widens them.
Some parts stores carry short lengths of slip-fit 3" exhaust tubing, which you can use to make the system wider.
Not all header makers' collectors are in the same position, and TTI probably made their X-system to fit their headers.



Car has a 383 with TTI headers