727 rebuild stock/hp street

There are plenty of good rebuild kits on the internet.
I would buy a HP kit with the good Red clutches. I just
bought one last week for $160.
I do not think that the drag will be an issue that you will EVER
notice in your application at all.

In what we do where thousands of a second are crucial
(I won a Class race by one ten thousands of a second before),
we put small pieces of rubber seal between each of the clutches
to reduce drag. Not a street modification but for Stock/Superstock
application.

Just my .02 = For Free!