i thought you were selling? if thats the case, i would leave the 4.10s in the rear. 4.30s might scare off more potential buyers that dont understand how it actually affects the car. mods in general will affect the resale by limiting the number of potential buyers,but for some reason, people seem to fear the gear.
many with 4.10s wish they upgraded to 4.30s instead, but i dont hear many that installed 4.30s think 4.30 is too much gear.i think you would be happy with the 4.30s, but is it worth the extra cost? i know you would install yourself, so no labor charge.