Clutch won't return off floor

Yeah, I did notice the spring on the pedal up top. It catches then when you pull the clutch pedal up it "pops" back into position (which is all the way up). I wasn't sure what that spring did. I've never owned a classic mopar before and not sure of its engineering on that. Now I did read somewhere when someone here put an ls swap in that his pedal didn't return off the floor intermittently, the. Said he looked and forgot to reinstall that spring. Said it was a centering spring???? Is there a hydraulic kit we can swap over too? I have an a203 (????) heavy duty 3spd trans that I picked up from a member here, I have an a903 driveshaft without the ball and trunion that I'm going to install when I get the floor hump and shifter.

Anyhow, I'll clean all that up, but I hope I do t have to swap a clutch in yet. I don't have all my parts yet!!! It's my daily driver and I was curious if the soft pedal and not returning was a sign that it was on its way out. Any other ideas would be greatly appreciated