Removing the resonator box is on the "To Do" list. Have already fitted the TV5 TB and currently has a K&N 57I which I am not overly impressed with. The K&N was on "Elsie" when I bought her and I had bought a 160 Air Filter assembly but the wider bracket on't fit without removing the resonator. So the 160 assembly is now fitted into "Elsie" and the K&N was swapped into teh 75th.
Have just sourced a nice S/S rear box ......................... it's a MGOC Super Sports one that is about a year old and it's coming with CAT and Trophy 160 down pipe and manifold so that's the exhaust sorted. Am aslo geting a pair of TF 135 cams with distributor drive so this little lot will be going into the 75th to liven up her MPi engine
and "Elsie" can have her exhaust back as currently it's on the 75th. The plan later once finances recover is to get a nice Miltek box for "Elsie" with DTM style finishers.