Thanks for the info...
The dealership that worked on this car before us stripped the heads on the Torx bolts. I dunno what they were using but the dealer sucks.
Use a T-27 Torx for all screws in the rear-most pan. For the mid-pan, the 6 screws on the outermost edge (3 on each side) that also attach the rocker panels are longer and use a T-30 Torx. I thought the manual even called for a T-25 somewhere - but that would be incorrect, and could lead to stripping of the heads.
Also you can go stainless as an option.
If you use stainless steel, make sure you use a very good thread lube (ARP Assembly Lube works great) in order to prevent galling and freezing the bolt to the threaded hole!
Use a T-27 Torx for all screws in the rear-most pan. For the mid-pan, the 6 screws on the outermost edge (3 on each side) that also attach the rocker panels are longer and use a T-30 Torx. I thought the manual even called for a T-25 somewhere - but that would be incorrect, and could lead to stripping of the heads.