i have seen many P510 datsun 1600's with S13 or S14 dashes, to go along with the sr20 engine conversions and make use of more bits from the front cuts..
So i guess it would be possible... Oh and what about that white RA23 with the 1JZ-gte and chaser digi dash?? i think it may have been a QLD car yeh?? that car is mental..