My Ansa experience was 35 yeras ago, but in general they didn't fit very well or last very long. The stuff available now, stock, Magnaflow, or whatever, seems much better. I just fit a Bosal middle muffler to my race Super and it was a perfect fit.
To Andrew, Pat, Randy,
How about a stock exhaust with a stinger in place of the rear muffler? Anyone have experience with this on the Giuliettas? My GTJ and Duetto both had this set up, nice sound but not obnoxious.