Stock 340 springs vs comp 901-16

Ive spread my brains out on the table here looking thru cam specs, valve spring specs etc, it can be overwhelming LOL. It seems that they all dont have "apples to apples" comparison. Seeing as how these x heads are 69's, I got specs from my 69 FSM. While heads are still assembled im going to cc them. Then also prior to removal, I will get installed spring height etc for the factory mopar springs.
Machinist cant remember exactly what was done to the heads(25 years ago lol) but "may" have put new exhaust valves in. I definitely remember him mentioning(years ago lol) hardened exhaust seats.
69 FSM springs advertised
Free length 1.94"
Seat load installed(valve closed) 80/90 lbs@ 1 11/16" = 1.6875
Valve open load 235/249 lbs @ 1 7/32" = 1.21875"
OD "not listed" ID 1.070-1.090"

Comps 901 advertised
Free length "not listed"
Seat load installed(valve closed) 104@ 1.65, shorter installed height with more load vs factory
Valve open load 236 lbs @1.250" pretty much same as factory load, but slightly taller
OD 1.494 ID 1.080"
Brought heads in the house I am not doing this in the shop lol. -28* C this morning, -43 with wind chill! LORD!!