Ned - we can look at your mock up trans and compare it to Rob's 4l65e when the correct bell housing arrives. One thing to keep in mind is the bellhousing's aren't interchangeable. The 4l60e has a removable 365 degree full bell. You're 4l80e to 6.1L HEMI adapter is different also (starter location).
Quicktime is working on a bellhousing. Only 3 to 4 weeks left (which is only about 9 months behind).