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I've got 0280158049 injectors from a LS2. Easy to find new or used and replacements will be available forever. Tons of available injector data. A bit oversized at 308 cc/min, but not too much to still be accurate and controllable. These are EV14 standard length with USCAR electrical connectors. They also have a conical spray, not the split pattern a lot of multi-valve injectors have. HP limit for these should be around 300 hp on pump gas, less if you choose to run E85. Tim

One relatively easy to get fuel temperature is via a Continental E85 sensor. Even if you only go between E0 and E10, this could still improve your overall fueling accuracy. The downside is that these sensors are digital and your engine management needs to support them. There are also Bosch TMAP sensors which can do pressure and temperature and could easily be mounted directly into the fuel rail. These are much cheaper than separate temperature and pressure sensors and if your ECU can take these into account, and has accurate injector dead time (3D) and flow rate (2D) data, can result in much improved fueling. Tim