833 Rebuild - 2nd Gear Grinds Going Up and Bumps Out Decelerating

You may want to go to the early A bodies site. Your pics show that your linkage is quite different from my '69. Someone with a like car may be able you more. I agree that the spring angle doesn't look right. You should probably get a service manual and parts book for your car. They can be downloaded, I chose paper. They can be very helpful with other things that will come up down the road.
Was the clutch out of adj?