So here's what I found. weight's below and a Center of Gravity measurement. for the COG measurement I just picked a reference point which was the top mounting hole on the frame for the bumper.
Factory PTO winch and bumper = 185lb (5")
PTO shafts and blocks = 15lb (-30")
PTO box = 15lb (-60")...
Meant to post up a little comparison of weights on a couple of bumpers on a BJ74.
I had always heard that the PTO and it's "porch" were really heavy and were the reason the front of the bj74 (mine anyways) had that "stinkbug" look.... lower in the front. It's pretty obvious the weight up...