ANyone know if there is a starter that will interchange with an rb25det in the US or does anyone have a working one for sale

Check ebay, I saw one on there recently. Any RB starter will do, so search for RB20DET, RB25DET & RB26DETT. Also, the non-recirc BOV might make the car run rich & cause it to stall at idle. There is a defencer box to fix it available from Japan (I think HKS).

You could probably try posting all your questions in one topic to save time and minimize annoyance, though...