54 and earlier cars and 1/2 ton trucks are enclosed driveshafts.
49 and up cars are 5 lug 4 3/4" bolt pattern. So are S10's.
I believe that Camaro is going to be a little too wide. 55-64 car, 4X4 S10's, 68-75 Nova's, 67-69 Camaro's are the typical swap choices, but others will work also. Measure to be sure. Make sure you get something with an appropriate gear ratio for how you want to use the car. Also, rim selection is important. If you are planning on using different rims in the future, you will want to know what the backset is going to be so you get a rearend that will work without being too wide or too narrow.
You will need to change the bellhousing if using a tranny thats '55 or newer from a car, or '48 or newer from a truck. that means motor mounts, bellhousing, clutch linkage, crossmember, emergency brake, etc.. will also need to be redone for that T5 swap. Possibly floor pan mods also. T5's are toploaders, so the column shift is history.