Transmission acts like it is stuck in gear?

Okay, I have the vehicle listed above, bought it as a project car. He told me the shift cables were stretched when I bought it, so it was stuck in gear. I bought it replaced the shift cables, and it still acts like it is stuck in gear. I can shift into 1st and 2nd no problems, 3rd and 4th give me an issue, 5th does not give me an issue but when I shift into reverse it’ll go in reverse but when I let out of the clutch it acts like it wants to stall out and doesn't move. I want it to be able to shift smoothly into all gears and be able to backup in reverse. I replaced the shift link cables and the whole clutch kit and nothing seemed to fix the issue. I’m thinking cylinders but idk I need help! Would be great!