2015 that should be a Raceline set up then same as your R500, as even the other options using external pumps have a front trough which is nigh on the same depth as the Cosworth version,
Not sure if they used a more conventional bell tank or the Brise kidney tank
I suspect it is Raceline as per the R500 but I won't know for a few weeks till I get the car home. Seems to have the 'usual' CSR/Cosworth bellhousing tank.
I'll keep you posted - very curious myself!
And don't sell this one !!!