Our kits come with a new closed cell float which will not sink in this new fuel. You also get a complete accl pump assembly with our seal and springs on it, lifetime warranty. We include the secondary cam/spring, new retainer for the power piston, high flow Viton N/S assembly, filter/spring, gaskets and small parts.
I would NEVER re-use a float for any reason, the latest version are designed to be ethanol compatible, haven't had a single failure with one to date.
If you are going over the counter for kits, unlikely anything in them is specifically designed to hold up in ethanol, and much of it is "old stock", as the companies supplying those kits are still using up materials they have had on the shelf for decades....FWIW.....Cliff