25 row (or 34 if you're inclined), thermostatic from Z1 -
https://www.z1motorsports.com/g37_37...oducts_id=4135
or
25 row, thermostatic from Stillen -
STILLEN Gold Series Oil Cooler Kit - Performance 400643 | STILLEN
I purchased the latter, as it should be sufficient and was less expensive.