I've seen so many posts on Quick Change Rear Ends lately that my head is starting to hurt, along with my rear end! Let's separate facts from fiction. To eliminate the confussion about a V8, Sprint Car, Heavy-Duty, Midget, mini-Q/C, 3/4 ton Banjo style non-Q/C, open-tube, closed-tube, open-drive, closed-drive, double splined axles, flanged axles, 5 on 5, wide-five and other stuff (including a Hot Rod Q/C's) take a look at these web sites: http://www.wintersperformance.com/catalogs.htm http://www.franklandracing.com/ Winters 2005 catalog is on line and it includes "Everything you wanted to know about Q/C's, but were afraid to ask your buddy 'cause he didn't know shit either!" They tell ya' how much power you can run through one, axle splines, carrier types, 9" Ford axles etc.,etc. A Winters is a Frankland copy. I can interchange Frankland, Winters, Jones and other makers parts, so long as they are the same style (and there are several). In 1974 I replaced my worn out Halibrand with a new Winters. The Halibrand Championship rear is like a Winters Sprint car rear. A Frankland is like a Winters Heavy Duty. The same Q/C gears work in either one, so long as it's a 10 spline rear end. I know that three years ago that same 1974 vintage rear end was still seeing oval track abuse! I have 10 of these Heavy Duty(HD) style Q/C's. Five are under cars and the rest are stacked up like cord wood. Oh yeah, I missed one little Halibrand open tube midget rear end. Now just about all the parts of these 10 HD rears will interchange. These things aren't rocket science. It's easier to rebuild a Q/C than a GM 10 or 12 bolt rear end! Also think about how different they look and sound!!!!!