SBM Cam 280 duration, 525 lift, Lifters, Valve Springs & Keepers, updated with more pictures.

I have questions about the cam specs too, as in
the numbers do not seem to add up;

on the left, the math shows
180+36+64=280 intake, and
180+32+81=293 exhaust, and
Card says 279/287
overlap of 68* points to an LSA of 109.25

on the right;
180+14+41=235 intake, and
180+5+57= 242 exhaust
Card says 235/237
overlap of 19* points to an LSA of 109.75

Cam appears to be installed 4.5* advanced, on the 050 numbers;
but only 2* on the advertised.

otherwise,
nice cam, fast enough ramps, good lift with 1.5s, better with 1.6s.
Seems like it could use more spring, so I could rev it to 7200, lol.
But, as it seems to be a tiny bit bigger than mine; that's going the wrong way for me..