Pan gasket for Canton 15-680s

[tortuga]

Mine is leaking at the back main, I’ve read that the four piece seal needs to be used, but also that the big blue one piece can also be used successfully (leak free)?

Is there a consensus?

Any tips on installing (on the car)?

I have both seals and an ARP pan stud kit, could go either way. One obvious issue is that the motor mounts will need to move off to get to the fasteners and to get the pan itself on and off, need to think a boy that one a bit...

Thanks
Steve H