I have the old casting AFR's 190's running on my car with the XFI280 cam. I'm not sure what springs these heads have but am pretty sure they're the original weak springs they came with. So, I want to swap out this springs for better ones but I don't know where to start, there's so many sizes and different specs!
Would the AFR 8019 springs fit? I want something close to those springs but am not sure if this spring will bolt on straight to my heads?
Also, I was considering in getting that AFR Rev Kit and keep the same springs, would that help me or should I just go ahead and get better springs, reason for better springs or rev kit is I think am floating valves above 5800, I been shifting 6200.

please help!! it's my first engine build.