When i talked to mark about the vgt 72, he said that he recommended at least 40% injectors, min, to drive/compliment the charger, said it wasn't meant to be run on stock fuel.
Yes it is a direct drop in. It uses a stg 2 garrett upgrade, a 4094 avant as a base.
I got the 4094 avant to eventually be turned into a VGT 72, and it could use 40% over injectors, i wish i had them for this turbo, i cant imagine stock sticks on DP's 72.
IMHO, aa s366 is as big as i would go, or the 4094 and have dannville work some wonder on it later, i am really liking this charger, proper tuning makes a huge, huge difference. It lights slower than stock but has plenty of kick, and would be even better with bigger injectors.