When you say "dropped in" - with what box and how much other work required ?
Hi Vettech, read my Facebook community page, it has quite a lot of the trials and strains of doing this conversion, it does literally 'drop' in except for.....
Making my own engine mount plates
Modifying the water pump outlets
Acquiring Camaro headers
Custom making an OTR fibreglass air box
Using Hooker accessory brackets for A/C, PWR Steering pump and Alternator (see comment below)
modifying the tranny mount point.
custom making an electric fan shroud.
If I did it again I would set the tranny support further back, cut the prop shaft down around 4 inches which would allow the engine to sit further back giving a lot more front clearance for air box options, you can also then use the stock LS1 accessory bracket for the alternator sitting at the bottom of the engine so saving money also.