its getting difficult to put it into 3rd gear...causes a slight grind at lower speeds, and if im trying to downshift on the highway at about 75mph it's almost impossible...huge grinding. whats going on???
37k on my 01 gt
37k on my 01 gt

. Try rev matching it and see if that will help you stick it in 3rd easier. If not, try putting the clutch in, holding it there for a few seconds, then downshift. Maybe your synchros just arent lining up as quickly as they should