Stage 2 chip. Stage 2 is for STOCK TBI heads with no more than 10 more ci from stock. This chip comes in 6 versions so its more customized than the Stage 1 chip.
Level 5 is the biggest that I recommend you run with the TBI system especially with stock TBI heads. 208-214 intake duration @ .050 like Summit K1103, sealed power CS1105R or comp cams CL12-256-4