Hi, My name is David. I am new to the forum, but not new to auto repair. I currently own a repair shop in Fredericksburg, TX. My current daily driver is a 1998 GMC Sonoma with a 2003 Suburban 5.3 and 4L60e. Have about 5,000 miles on the build. Looking to gain some insight in tuning the combo. Future plans include building an early 50's GMC truck with a turbocharged 4.8. Looking forward to learning from the folks here.