I did a single turbo to my setup. Everybody keeps talking about lag. My T-66 Turbo has a .84 A/R housing and I didnt have the lag everybody keeps talking about. Of course maybe the sheetmetal intake manifold helped the low end torque but either way when that turbo boosted it felt like so much power. And it was alot more powerful then my two 14B's and had far less lag. I am still building my motor. People think you can't boost first gear?? I smoked all four tires and brough the car sideways like it was on water in first gear. I had the pic posted on here a few months back.