I thought I only needed one. I'm so stupid. I found another cheaper one on E-Bay and got it. I finally got around to installing them to discover the big difference. E-Bay set up with a torch, lots of swearing and an 11 ton press. The Moog block has notches on the outside diameter and is significantly larger. I don't know how much pressure it will take you to install it, but it wouldn't do it for me. It's marketed as a 'fix' for a big hole, so I'm sure it will fit in that regard. I hate not…