Provided that you don't weaken the bridge area, it is unlikely to make any perceptible difference to the sound. And even those cases where the mods are so extreme that it does make a difference to the sound, it is just that - a difference, not a detriment. So, unless the bass is absolutely the best sound that you've ever experienced regardless of make, cost, type...then go for it. A bass that is too heavy is a bass that doesn't get played very often - if at all...