trying to return cooling oil???
 

I don't want to drill my oil pan for the return oil from the turbos. I am still in the shopping stage to decide what way to go on my 2004 GMC Sierra 6.0 gas 4X4. I wan to increase HP/TQ in the 3k to 4.5k rpm range. I wan to be able to use stock fuel pump and injectors. I am knew to this and would appreciate any input. Working with a very small budget. Thanks in advance.???

You will have to drill the oil pan, I'm sorry there's just no way around it.
And the stock injectors may be barely big enough to run 3-6 pounds of boost.
Adding extra fuel for the extra air is probably going to be what sets you back the most on your budget.

Going to create stand alone oil system.
 

You may be right but I am going to use a 2-1/2 gal tank, two oil pumps, and an oil cooler to create a loop oil system.
I don't disagree with you about the amount of boost but the mfg. of the kit I am buying which is twin turbos. claims that their 8psi will work fine with standard injectors and should create somewhere around 500RWHP.They built the kit around a GM 4.8 so it should work with my 6.0.
So many different opinions make it very hard to know what is right.
Thanks for the input. Merry Christmas