Doesnt make much sense to me.

I cant shift into gears while the car is running yet if i turn it off and put it in gear the start it up again. When it engages it shudders really bad. And once its fully engaged its like its normal.(no im not driving the car this way, i just moved it)

Could it still possibly be the clutch?

Ive already tried checking the fluid level and its fine. So im just going to replace it with a Spec stage III.

Think it will solve my problems possibly or not? Either way its about time for a new clutch. And if not now im pretty sure after the heads/cam it will be that time.

Thanks!

Ford