Thanks, Karl. I don't think hitches are made with great precision but they have to be close enough. In my experience, there is always a certain amount of persuasion needed to fit those large course thread bolts even when the holes are a perfect match. But the differences between the Landcruiser towball and the one David measured is quite a bit. 

I thought about making the holes oval but that would weaken the hitch not to mention there did not appear enough material on either side.

BenT

On May 24, 2011, at 1:37 PM, Karl Ploessl <karl.ploessl@gmail.com> wrote:

> Go with David's measurements. I recall that it needed some convincing
> to get all the bolts in but eventually they did. i will go out tonight
> and try to measure
> 
> Karl
> 
> On Tuesday, May 24, 2011, BenT Syncro <syncro@gmail.com> wrote:
>> Interesting differences. David's measurement of his hitch adapter is markably different from the one on the website that Karl referenced below. Which one is correct for the SA hitch? I bought a standard bolt on tow ball and it is immediately apparent that the holes are too far apart. Here's what I gathered:
>> 3 3/8"  or  85.725mm (from Karl's link)3 3/4"  or  95.500mm (David's meas.)
>> 1 3/4"  or  44.450mm (from Karl's link)2 1/4"  or  57.150mm (my calculation)                57.125mm (David's measure                58.128mm                 ments)
>> 
>> 
>> Regards,
>> BenT
>> 
>> 
>> 
>> On May 24, 2011, at 12:05 PM, Karl Ploessl <karl.ploessl@gmail.com> wrote:
>> 
>> years ago I got the following which I could mount onto the SA hitch
>> (one of the last ones from Busdepot):
>> 
>> http://coolfj40.stores.yahoo.net/hirefj.html
>> 
>> 
>> Karl.
>> 
>> On Tue, May 24, 2011 at 3:04 AM, BenT Syncro <syncro@gmail.com> wrote:
>> Does anyone know where I can get either a receiver adapter or a towball/hook for the SA tow hitch? I bought one and did not get the hook with it.
>> 
>> Alternatively, can anyone tell me the spacing of the holes? I'd measure them myself but the hitch is 100 miles away from where I am at the moment.
>> 
>> 
>> 
>> TIA,
>> 
>> BenT
>> 
>>