727 rebuild stock/hp street

Where did Chrysler use stock components in their 727's ? Let’s see, behind Hemi's, 440's, 383's, 340's, Max Wedges, plus a variety of ambulance/police/ truck applications. So my way of thinking for soft parts, would be to get a stock master kit, with Raybestos waffle lined friction plates, steel plates, both bands, a bushing kit, maybe a washer kit, filter, and the rear clutch return spring. And maybe the Transco small SKTF shift kit. There is nothing wrong with ordering a performance kit from Cope or others, if it is needed, but from your post what I've listed should be more than adequate. You may find other items you need once it's apart. Check and see if there is a Transtar warehouse nearby. Their main business is supplying transmission parts to transmission
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!
mind to share which one you purchased with me? Thanks