I'm putting a LS3/6L80 in my 68 (thread in my signature) and I plan on moving it as far back as I can (I'm using the Dirty Dingo slider mounts). This will more than likely necessitate a switch to a high hump. Your stock oil pan will work once you move the motor back. A variable vane A/C compressor from vettes, camaros or anything else will work initially, but won't last (confirmed this with VA and several professional car building shops). Holley make a nice set of brackets that will let you use most of your factory accessories (except a/c) so that you won't have to cut the frame. I think the factory TBSS manifolds might work, but I know that factory 2010+ Camaro SS manifolds will. Do you have the triangle on your transmission ouptut shaft? If so, here's an option for your driveshaft:
http://www.driveshaftshop.com/domest...ece-driveshaft