Looking to do a 5.3 ls motor swap, best place to buy a ready to drop in package?

[laid67c10]

I'm gonna do a ls motor swap and am curious if anybody has a ready to drop in package low mileage 5.3 and 4l60e transmission, I don't really have the time to search for all the components needed for the swap, I'd like to find a place that has one ready to bolt in, wiring harness, etc.... I'm gonna be putting in a porterbuilt extreme dropmember with ls mounts so won't need motor mounts. If anybody knows of any places they recommend let me know.
Thanks in advance!
I'm sure I could piece it together cheaper but I work all the time and would rather have a one stop shop if ya know what I mean. Also who makes a good aluminum tank that mounts in the rear frame rails with a top fill?
My buddy and I will be doing everything, so I'm not looking for a shop to to the work! Just want all the pieces before I start!