Stock 340 springs vs comp 901-16

Thanks guys. Day "off" tomorrow so I'm gonna check out springs and such on x heads. These were done for me 25 years ago. I don't believe new hardware was installed. Probably hardened seats. Cost $500 at the time. I know how to replace stuff and im mechanical but as I've said before the science behind it is a learning curve for me.
I have various sets of springs available but the best I've got(for 270S cam) would be the 901's or the ones on the xheads (I'm 99% that these are factory 340 ones). I will disassemble and inspect tomorrow in the -30 garage lol. Good idea seeing if machinist will check springs for me.
Thanks all.