I did replace the pump years ago and don't remember having to remove the balancer but I remember what a pita it was getting it out though. I'll pull the balancer and it should be fine from there - thanks.

My second question is related to the cylinder heads. I have the shop manual and was planning on removing the camshafts but have found what I think is a broken or partially broken lower guide. I was able to turn the engine to TDC (only had to move it an 1/8 of a turn but am afraid to move it anymore. With that said, how easy is it to remove the heads with the cams in place? Is it possible to remove the cams (specifically the lifters) without turning over the engine?

thanks