J31/2 just about to have structural life extended to 67,000 cycles. With a lot of the aircraft in the desert going back to the banks now, with BAE or the banks off-loading them at fire-sale prices there are going to be a quite a few of these around for a while.
OWE M23 approx 9500lbs
OWE J32 approx 10600lbs
That is 1100lbs difference which is quite a difference from a structure point of view.