Neither! It's an S14 Silvia with an RB26 engine, RB25 'box and custom prop. The subframe is the same as a GTST one. From what I gather I can fit the hubs into the Silvia knuckle. Re: the diff - as it's an R200, I assume it has the same propshaft flange as the Silvia. I assume I can just switch the backplate so it mounts to the Silvia subframe.
All of the above is based on research from the wonders of the internet. Basically, I want thicker half shafts as they are the weak link in the drivetrain. Any help or advice welcome