Sounds like your syncros are bad. Unfortunatly, that would qualify as a "tranny problem". I don't think it's any HUGE deal to fix, but I don't think it's exactly a quicky fix, either.
However...have you checked your clutch slave cylinder? Had that go bad once and it wouldn't let me into gears, either. Will it go into gear when the car's off? The slave cylinder IS a quicky fix. Pray it's that, dude...
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Who cares what's in your wallet...what's in your garage?
VG30ET in process of rebuild on left and my 88 300ZX NA, 2 Seater, 5-Speed...my 3rd Z31
Hope you can see the tiny pic...AF reduced the size limit!
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