Summit exhaust systems, are they decent?

I installed the Summit 2 1/2" system on a '65 Valiant 318/904/spit fire combination. Installation was no fun on the passenger side from the muffler back. The whole kit was a cut and paste deal since I had to buy the kit for a '67 up car and adapt to the early car. I would probably not do it again on an early A car just due to having to cut and fit the kit. I think I would be money ahead just buying some J bends and 3 sticks of pipe plus being able to pick your own favorite mufflers. I would like to do the kit on a '67-up car just to see if fitment is "better" and will likely use the 3" kit on my '73 Road Runner down the road. I have not lit the match on it yet but it will have to sound way better than the 2" system I replaced.
Bob