Wow! Thanks for the encouragement Dave!
I can't wait until I can change the unit on the car and see how things go! I will definitely let you know how the 603 performs with a clean pipe to the ALDA!
On the oil leak, mine is also a Garrett turbo and it is very annoying and sure does crud up the shielding on the bottom of the motor. On the plus side, my radiator hoses are always soft in the morning and the engine idles very smooth!
In fact, I just switched it over to synthetic oil and all seems great at this time! I think the only leak I can find is on the bottom-side of the turbo. Thanks again and I'll keep you posted!