I would definitely recommend the Work Turbochargers Stage 1. You do not have to do any upgrades on the injectors or chip. Spools a lot quicker with more hp. The Stage 2 upgrade is what I will eventually go with, that would be accompanied by 60lb injectors and chip from Turbotweek. The car was running great up until a few weeks ago. It now hesitates and pops when it gets to more than 3psi boost. Changed out the coil pack to a 1987 plus the module, new MAF, changed fuel filter, checked fuel pump and regulator, all checks out. Did a pressure test on the boost side of the engine, plus a vacuum leak test, compression is good, tested injectors. Still no change. Wide band numbers are within limits. That’s about it. A little frustrating but I never thought this was going to be easy.