York Compressor Bracket Removal Help!

[1972BlueC20]

I'm going to pull out my current old and broken down aftermarket knee knocker AC system this weekend, and replace it with a Vintage Air or Old Air Products in dash system sometime before next summer hopefully. I have some questions regarding the bolts that are holding the AC compressor bracket on currently.

My compressor is a York compressor, and the bracket is a platform style bracket. It is secured by several bolts. 1 bolt is attached to one side of the thermostat housing, 2 bolts are attached to the water pump. 1 is attached to the carb return spring holder and the last is attached to the front bolt hole on the passenger side exhaust manifold.

My question is do you guys think I can use the current bolts after the bracket is removed or will the bolts most likely be too long?

I realize that I will find out once I do it, but if I know now, then I can maybe plan to figure out the thread size(s) and lengths of each bolt needed so I can source the bolts now before I tear everything off.

If anyone happens to know the size(s) and thread types of the bolts I mentioned above that would help me a lot, otherwise I'll have to pull them out and run to the hardware store and figure it out.

Here are some pics of what I'm dealing with :