My block is leaking from both the rear main seal and a cam seal, so I want to replace all seals at once (don't know if the front is leaking too). I have never done this with a front main - I'm wondering if it's feasible with the crank sticking right through the center of it. Not sure how awkward that would be to pry it out. I already bought the seal, and it's a lot smaller than I remember!