the brand has nothing to do with this
the short mufller has a design that does less back pressure = more noise
any regular longer muffler with regular chamber will fit your rialta .....
I like walker brand .....
contrary to you, I went the other way around ......installed a short less restrictive muffler , gained on torque response ....no more noise when coasting !
1996 C-21 Triple E ..... 86 Jeep CJ quite modded , 84 olds cutlass resto mod ,
On or off road , I`m on the road ! roadtrips !