Just an FYI, the MX83 is not available in that range. 173 and 181 are closest. MX78 comes in a 176/178 depending on the model year.
I have a pair of MX 83's in a 173 that may not get as much play now that I have fx94's. They have aprox 5 days on them and are mounted at a +1 for a 305BSL. Shoot me a shout if you are still interested