head work?

keep the info coming guys, I'm taking it all in. I tried to get a casting number off the heads, all I could get was a 4 digit 1701 on one runner, a 360 on another runner, 3 digits on another runner, too hard to make out but something like 15C ?? Do these mean anything? Do I need to take the rocker shaft off just to get the number? Didn't feel like pullin that cover off this a.m. after a nightshift but I'm sure glad I did. Sweet surprise! Aftermarket rockers (they aren't in the receipts I got with the car) Maybe these red springs are aftermarket too? Bigger cam is more feasable now. I'll try to post a pic of the rockers. Crane?
What would my compression ratio be at with the KB107's assuming zero deck?