9" gears and housings
I'm running a Moser housing with 31 spline Moser axles. Howard "Slick" Poston built me a 4.00 Locker gear back in 2000. I had it checked once a year ago, he said it was fine. Slick was the head gear/transmission man for Joe Gibbs Racing for 15 years, and worked at such places as Hendrick Motorsports, Alan Kulwicki Racing, etc.. He's retired now but he still builds gears on the side. He's the best gear/transmission man I've ever known. He's been building them for over 40 years. If you want more info, PM me. Jeremy