What spring rate should I use?

Well hello again
I recently swapped engines in my b13 chassis and I went up from 2250 pounds with driver to 2490 and where I live most race tracks doesn’t have intermediate high speeds turns but a lot of what you call hairpins with long straight ways my spring settings with 2250 pounds were progress group coilovers with 350 pounds springs front and 250 pounds rear and the car turned on a dime but now I have seen that the tendency with the SRs is to have less weight on front and more in the rear springs so I will like to hear comments on this due to the fact that in the end it may be better to use that approach since I will be carrying extra weight up front.
thanks:eclipsee_steering: