I kind of thought a few people on the site may have seen this at one time or another. The problem is that after almost 2 years of consistent driving and after an initial rebuild, 2nd gear suddenly let loose while accelerating, only 8,000 miles approximately. Wasn't gunning the throttle at the time, but was under the impression that mustang T5 trannies were supposed to be a little more reliable than this, should be rated for 300 ft lbs of torque. When it was rebuilt, I had just pulled it out of the 86 mustang gt with a worn 2nd gear synchro, synchronizer and gear. Ended up replacing all the synchros as well as the synchronizer with the gear along with all the bearings included with the rebuild kit. 1st gear seems to be unaffected as well as 3rd to 5th and reverse, but apparently the shift fork shouldn't have anything to do with the problem since 1st is on the synchronizer as 2nd. I'm just in the beginning stage of removing the 5.0 to get to the tranny but would appreciate any input before it gets disassembled to reveal the real culprit.