When I did my new clutch and tremec tko(tremec was used) I drove it somewhat normal the first night and by the second day I drove it harder and abused it. As long as its fine when its installed, I see no reason to drove it like a pussC for 500-1000 miles like some may say. Fwiw, im running a mcleod disk with a king cobra pressure plate all from d&d perf, awesome set up!
When I put my King cobra clutch in I waited about 500 miles before it got beat on. Personally go with the break in period rather than break it and have to redo all that work again IMO