So... I like to tweak. Mess around. Modify. Experiment. with my guitar... and one of the things that got me all curious was this replacing the stock block in my Gotoh Floyd Rose with a larger block. Tried to do some research and came up with very little information on it - so I thought to just give it a shot and "mythbuster" it, if you will. So the Gotoh Floyd Rose - excellent floyd, probably the best around now. Great tone and construction. It already has a brass block (surprise!) but I went ahead anyway... I had a milled brass block, same height as the original (41mm), and about double the weight (original was 125g, this was a sort of 280g I think). The cuttings and holes and stuff - as close to the Gotoh's as possible. So installed and all. The verdict: There's a difference and a good difference. I'd do it to any FR-equipped guitars I own. 1st time playing it after the big block conversion - I was startled by how bold the sound had become. There was more low end - in a more growling way - and notes had a more... robust tone. More "solid" tones were apparent. I'd say the lower mids were enhanced in a sweet, musical way. Nothing (eq wise) was overly boosted and I did not have to tweak my pedals/amp. There was certainly less warble. For floyd users, i think its apparent how digging into the strings can give a warble of sorts - irritating and it prevented me from really playing. Always made me hold back to avoid that warble. So now, the warble was reduced - hitting hard, yes, there was warble but much reduced and it lasted for a much shorter time. Note while this affects flutter (lessens it), it did not kill flutter like how a tremsetter would. Definitely more sustain. String tension/resistance seemed to increase. The trem was stiffer too - much like if I had increased string guage to .10s. For my guitar, the trem's range of motion was unaffected. Oh, the guitar was noticeably heavier too. The sonic differences were evident, even on high gain settings. No more warble, fuller/fatter tone and more sustain. Nice. So yeap. Hope this helps any floyd users who are wondering what this mod does.