86 corvette l89 valve springs

im rebuilding my 5.7 i have early iron heads the new pistons summit flat tops 9.5 comp ratio.ive installed a sealed power cs766 cam specs are
Spefications

Cam Type - Hydraulic

Footnote Code - (050) Duration at .050 Lobe Lift

Exhaust Duration - 207

Exhaust Lobe Center - 114

Intake Duration - 202

Intake Lobe Center - 115

Lobe Seperation - 114

Exhaust Lift (Inch) - 0.276

Intake Lift (Inch) - 0.269

Exhaust Lift (MM) - 7.01

Intake Lift (MM) - 6.833
my question is valve springs mine have over 100.00 miles on them what should i order? i havent a clue on how to spec these for my motor
iam on a buget so im looking for springs that will complement this stock build.
thanks steve