Hi as we are finishing up the re-build we keep finding small things wrong/missing. My friend and mechanic is somewhat of a perfectionist (not really a bad thing) but it does add time to the project. We are missing one of the "caps" on the flapper box. A entire replacement is well over $100.00. Was wondering if anyone had a source for just the top. We have one side complete just need another, or any other suggestions. Thanks and Much appreciated!

1 rob one from another flapper
2 install a complete used flapper box
3 not worry about it. Will loose some heat and may have road splash into the flapper
4 make one out of a soda can

I have parts

Are the tops really necessary? One has been missing for the 7 years I've owned my 914. The one I do have rings like a bell until things get good and hot.