I have the Homier version of the quickhitch (Speeco makes it I believe) and a Corriher/Midwest Boxblade. The width is fine, but one the Midwest box blade the bottom mounting pins are too far back. The locking mechanism hits the frame mount before the hooks can grab the pin. Also the top link area isn't quite right but I think instead of hooking on the top link pin, It would hook up to another bolt that help holds it together. I am a bit hazy on the last part because I haven't fixed the bottom issue, so the top issue has been a bit moot at this time.
So to get to back to the subject, the width and height of pins on an implement might be perfect, but I wanted to say that there are a lot of other issues that can screw this up. /forums/images/graemlins/frown.gif Good luck!