different valve spring options

so i have this cam i want to put in my 360... is there another spring i can run other than the comp double springs(995-16).. i already have new seals and would want to have to buy Viton seals just to run the double springs... cam is comp CL20-224-4.
XE274H-10
@50 230/236
intake .488 exhaust .491
lobe sep 110

cam card.jpg