Its so hard to tell how long each alum. clutch set up will last, some are harder alum. grades than others. If I remember correctly, my savage alum set up lasted about 3 gallons max give or take. I dont remember, but I can tell you without a doubt my stock clutches in reverse direction last and last, I dont ever have to think about it being a problem. You might like the alum. shoes for performance, mine just didnt last. On my revo I did the same thing with the shoes, reverse them. They held up on a .32 axial big block with gearing all the way to 18 cb 36 spur. After I maxxed out the gearing to 20cb 34 spur the stocks couldnt hold it, so I went to my savage 3 shoe set up (not alum). It was amazing how much those stock shoes could hold up to after they were reversed. If they were not reversed the big block would just tear them a new one.