I would like to ask the opinion of the group about the Overdrive Gear Box Option. If one had access to an overdrive, is it worth the trouble doing the conversion. I have access to one but I am not sure if it will work in the S3. I would need to shorten my drive shaft but I believe I have all of the other components. The only other issue is that the Overdrive is out of a SII, will it work with the S3. In other words are the overdrives the same and can they be interchanged. Yes, as you can see I do not have a great deal of experience with an Overdrive. Is it worth going after this?