3" duals on my 74 duster
I bought the Summit 3" from summit, and had it installed on my 73 Duster for my 408 Stroker. It was a lot of trial and error to get it to fit without hitting anything. If I had to do it over, I would go 3" to the mufflers, and 2.5" over the axels, or maybe 2.5" all the way. I will say, though, that it flows quite well, and my 1/4 ET's are as good with the 3" as they were beforewith open headers! Mine had a Dana, bu the axle tubes are the same size.
I bought the Summit 3" from summit, and had it installed on my 73 Duster for my 408 Stroker. It was a lot of trial and error to get it to fit without hitting anything. If I had to do it over, I would go 3" to the mufflers, and 2.5" over the axels, or maybe 2.5" all the way. I will say, though, that it flows quite well, and my 1/4 ET's are as good with the 3" as they were beforewith open headers! Mine had a Dana, bu the axle tubes are the same size.