I made the same move 11/08 from a B3030 to a Grand L3240. You can get the GL3240 with a mid pto. It is a dealer installed option. Make sure you get the LA724 loader with skid steer type q/a if going with the L3240
kubota L 3540 hsdc,B 2320 hsdc & lots of other stuff!
I also made the jump from the B3030 to the GL3540 in april 2008. Be advised the L series is substantially larger in all aspects to the B series! Your going to need a double axle trailer to haul it around!
Did you haul with a single axle before? I did my 7510 a couple times but it was touch and go. I don't even dare drive my b3200 on my trailer. I have been kicking myself every day for not buying a double axle trailer I love the size but not the tow capacity. As usual being cheap is going to cost me I had the cash to buy the double but at that time did not have a tractor.
kubota L 3540 hsdc,B 2320 hsdc & lots of other stuff!
I have always used dual axle trailers. I do see people hauling small machines on single axle trailers, bouncing down the road with no brakes at all, crazy!