Wheels spacers for 2720/2032R with 62" MMM?

The question I have is relating to my new 2032R I've got the R4's and 62" MMM and I'm looking at Motorsport Tech spacers. I've got a couple of ditches here at my home address and I want to know how wide I can move the rear wheels out without interfering with the 62" MMM. I know you can flip the wheels to a wider position and gain some additional width, but I've ordered the wheels weight and don't know if they will work if you flip the wheels to the wider position. Could some one with either 2720/2032R with 62" deck and who hasn't flipped their wheels to the wider stance do a quick tape measure. The smallest width this company makes for my tractor is 1.5" rear spacers.

Thanks