MSD

look at the instructions that came with the springs and see where that is gonna bring total in at.. it may or not be good for your combo. the springs go hand and hand with the bushings..

any idea what bushing you are running?

1 heavy silver and 1 light silver can bring total timing in anywhere between 3000 and 4000 RPM depending on what bushing you are running.


https://static.summitracing.com/global/images/instructions/MSD-8464_frm28727.pdf

msd.JPG