do the mid-length headers require dropping the k-member for the install? i wouldnt mind paying an extra hundred for the bassani's if i could shave about 8 hours off the install.

why did you have to pull ur motor? upgrades?
I just installed mine and didn't have to drop the K-member. I did unbolt the right motor mount and lift the motor slightly to get them in. The individual tube desing makes the install a lot easier. The make good power too.

dropping K member - while time consuming, actual level of mechanical involvements are pretty low. Its basically just whole bunch of bolts and nuts.
If your gonna install any headers without dropping K(and thats big IF, as I see how you can do it without dropping k member) seem time saving, its actually gonna take longer to do, because you'll be spending about 1.5hr scratching head try to get sockets to fit on infamous 3rd starter bolts, and lifting engine up and down to gain enough room to work your wrench, and even if you do, you can only turn the wrench like 1/64" at the time. So it may take you 20min just to tighten 1 bolts.
I dropped K member completly out of the way, and yet, i still had tough time turning some bolts, because bolts would be behind some primary tube, whcih is between head and frame, I just don't see how you can do the install without dropping K member...But i guess having individual tube that moves makes it easier?
how do all those tubes stay in the collector once its assembled?