8.75 it is, now i need to narrow it HELP

Where are you located? Moser gave me a quote of $110 to shorten a C body housing. The are located in IN, you can't go wrong with Moser! If you want it done right got to them, excellent customer service too. As long as your backing plates are 10" they will work, just tell the guy's at Moser what you want to use for backing plates, they know what will work.