Just finished installing the Halon-Wilson muffler system on my C85 Chief. What a #**##** that front inside attach nut is. I used every combination of wobble socket and some 'magic words' in my tool box but it's finally completed. The Cessna system is simple compared to the HW not that either is impossible. I finally had to drop the mufflers off the stacks install the stacks loosely and then reinstall the mufflers and tighten the whole system down evenly.
There ......my rant for the day!
Mike