I'm looking into the Nordstrand big blade man MM style pickups, and thinking of putting one into my older Corvette FNA. These pickups are sold in 14" and 20" radius, but looking up Warwick's specs on this model - they don't provide radius. Has anyone added radius type pickups into this model and have general guidance into which size would work better? en/Warwick---Basses-Made-in-Germany--FNA--FNA-Jazzman--4-5-string--Features.html
Print this, cut it out. Helps if you can print on thick paper, or stick it on to some thicker paper. Free fretboard radius gauge printout from PickGuardian Might want to check both your fretboard radius and the actual radius of your strings, at your preferred action height - low B strings are usually set higher than high G strings, so the radius of the strings themselves are often flatter than the fretboard.
Also - My guess is that these pickups are more sensitive to radius differences than most, since this is the only set that Nordstrand make in different radiuses. So I'd go with your string radius measurement here.