The only real "pro" of the stainless line is that it's easier to work with than a hardline, as you don't have to worry about it kinking as you move it around. That being said, the "cons" are fairly negligible. I went with a stainless line because my hardlines were corroded, and I was not too competent with fabricating hardlines at the time.

There are 6 flywheel to pressure plate bolts. There are 3 flywheel to pressure plate dowels. There are 7 flywheel to crankshaft bolts (on a 7bolt).