I'm glad you finally found the leak. lol
I'm leaning toward an Squires Turbo Systems rear-mount-turbo kit. They're normally $2,500, but a guy on LS1Tech has his kit minus a few parts for sale for $900.
I need a wastegate, blow-off valve, some piping, and a high pressure oil pump.
When all is said and done, it's right around $1,500.