Mustang II Spring rate for BB Maverick

I want to replace some cut stock springs in my 460 Maverick with stock Mustang II suspension. It is currently sitting too low in the front. Does anyone have any suggestions for picking a spring rate? Any help would be appreciated.

Greetings. I used springs outta a ranger p/u for my Pinto. Ended up cutting a coupla coils off to get the front end height where I wanted it.