Is there any way to find out what options were ordered with the 74 Camaro I recently bought. It's a barn find that I paid 2,000 for. I am trying to find out if it came with a 4 speed or automatic trans.

 

If you had the factory build sheet you could find out everything. Sometimes they were stuffed somewhere inside the car (under a seat), and sometimes they were simply thrown out at the end of the assembly line. There was no rule.
If you have the original partial VIN numbers matching engine, check the suffix code that should be on a pad on the block, in front of the passenger side head. The suffix code generally tells what type of trans the engine was paired with, as well as other info.
Here's how to look up some other things, like what model it is, original paint color, trim, interior, etc.: 1974 Camaro Trim Tag Information

 

I'd think it would take a really good fabricator to close up the hole in the floor if your car came with a 4 speed, and has an automatic now. A simple inspection of the trans tunnel should allow you to see if it has been patched in where the 4 speed opening was.

 

Could have been a manual 3 speed also. Most conversion I have seen people don't bother with the changing the steering column. If the was automatic and is not a manual most likely there will be a lever 6-8 inchs after the column comes out of the fire wall. If it is hanging out in space with nothing connected to it then it is at least an automatic column.