I have a B16 swap (is suppose to be a Gen2) I recently found out that the Throttle Body is OBD0 so I started poking around a bit I looked on my head by the header (#1 cylinder) and saw the head said PR3-3 So I Wiki'd it and found two places where people were asking very similar questions and two places said it was a ITR head. I know they're in the same family cast but seems werid b/c I dont have an ITR head PR3-4 seems to be a B16 for sure I think the info I found must be bogus .....or I got lucky when I bought my swap (I prefer the latter) Any sound info would be appreciated