Yes it pulls out straight. One other thing, most of these cars in that time era used the one on the fuse panel for 4 ways. The turn signal flasher is usually in the wiring snarl around the steering column after you get the lower dash panel off, they hide it in that area on a pigtail 2 prong plug. Sometimes it snaps into a bracket, but usually it just hangs there.
I had a 73 T/A but it's been so long I can't recall exactly where it is, but I gave you the general area that many GM cars used of that era. Hopefully this helps.
This company has been making LED products for cars, they seem to sell reliable products from what I've heard, and read:
https://www.superbrightleds.com/vehicle