Positional requirements for calling an open push

Yesterday I was fortunate enough to be sitting at two different tables with a guy who was open pushing a full stack on every hand. What are your requirements for calling one of these pushes? Obviously, you can call a lot more loosely if you're in the BB than you can if he pushes UTG and you're UTG+1, but I still don't have the greatest idea of what my range should be for calling one of these.

How good should your equity be against a random hand in order to call? 55% maybe? That would be 44+, A2s+, A3o+, K5s+, K7o+, Q8s+, Q9o+, J9s+, JTo if you're in the BB. I'm going to spend some time with PokerStove figuring out good ranges for other positions considering the chance of an overcall.

If he's pushing literally 100% then you'll actually need slightly less than 50% due to the dead money from the blinds.

If i randomly sat down at a table and this happened to me, I'd probably call with any two cards T or higher, PP's 66 or higher, Axs and Kxs. I'm sure you can call with wider though.

i havent seen this in sooooooooooooooooo long.