I think you have 2 different mount systems there. the rusty/orange mount in upper picture, is an old school mount I would expect to see in a sixtes gm car. Also the mount that lets the engine leap out of car when fails.
The buckets (bolt on to block) in lower picture are for the clam shell type mounts.
I like the ORD or Diy4x mounts. used these on my 77 https://diy4x.com/product.php?productid=17692&cat=252&page=1
see you have a 1st gen you would need this kit to up grade
if you use the oem style, add a cable\strap\chain left side of motor to frame leave a little slack
Apparently you never had old tired mounts when you were a teenager!
Nothing like feeling the engine drop back down while you are doing things that your Dad wouldn't approve of!