Not sure who post #6 was directed at. . but wow... . #@$%!
Anyways, Id say your on the right track. Ive never had any dyno time with a 160 pump, but Ive done quite a few plates, gov springs, etc on them. those small pumps like injectors, and NEED gov springs. They really wake the pump up. I did a set of 3Ks in a 160 truck recently, and Id say go with 4's depending on the plate you use.
Im not a big fan of the AFC spring kits. The smaller spring has a hard time controlling the fuel with large injectors and laggy turbos. I run the stock 215 spring in mine, and it is more driveable, less smoky, better mileage, and doesnt put the fire out, per se, and makes good numbers on the dyno. I use the spring and foot in conjunction with the 0 plate to control fueling.
Any injectors bigger than 370's are good. I love my EDM 370's. They actually smoke less than even the stock 215's did, at the same power level of course. And they spool the turbo nicely. Only thing is, your afc tuning has to be good or the injectors will dump tons of fuel and loose power.
--Jeff