Reverse gear engaged while in neutral

[Ferrari240s]

5th gear went out just before this had happened

The shifter is free to go in all gears with the clutch pedal in. When I release the pedal gears 1-4 grind and the car goes nowhere, while neutral and 5th go in reverse

For what it's worth the clutch has been going out lately, but I doubt that has anything to do with it considering the car still moves

I'm sure I need a rebuild. Any tips or ideas before I submit to a mechanic?

[PapaSmurf2k3]

Does the shifter travel seem normal, or does it feel like its restricted? Its definitely worth popping out the shifter cover and boot to take a look at the turret to make sure nothing is stuck in there or something.

[Ferrari240s]

Travel feels fine. I'll go pop it open see what I find

[PapaSmurf2k3]

Yikes, if travel feels fine and all, it may be internal to the trans. There's forks and stuff that engage the different gears/shafts. If one of those forks/engagers popped off, you'll lose gears