back when i first bought my 69/383 dart,i threw out the rusty headers,and used a C body on the left,and a 68-69 "900" on the right. my exhaust guy in town used a 2" to hook the lh to the 2.25 pipe,and worked great. he bent it around the t-bar,and missed all the 4spd stuff. that was in 1984,and the car still has all the exhaust on it still...the correct manifolds were unabtainable in my stupid little town,lol