Right now ive got a pr3 obd-1 ecu powering a B16a. I just picked up a 98 LS motor pretty reasonable and im thinking about swapping that in my car. Could i run the LS motor off of the pr3 ecu?

Second, im using a P30 ac bracket on my motor in the car currently, would thi smount work on the LS motor?

 

You can run the engine using that ecu, however it will throw a code unless you some how hook up a knock sensor for it. You might want to get an adjustable fuel pressure regulator for it and bump up the fuel pressure a couple of psi. make sure you don't over rev it either, as you'll be able to go 1K RPM's past where the motor should be revved to.

The mount you need is the one from the del Sol VTEC. I'm not sure if it says P30 on it or not. It does sound about right though.