Normal
I got the non-combo res, the holes drilled out are completely different sizes (sorry too lazy to get a ruler). The P5 pump is slightly wider than my EK DDC pump. The P5 pump can't fit into the non-combo res. There's also a tiny lip on the combo res.[MEDIA=imgur]3FXMiRY[/MEDIA]
I got the non-combo res, the holes drilled out are completely different sizes (sorry too lazy to get a ruler). The P5 pump is slightly wider than my EK DDC pump. The P5 pump can't fit into the non-combo res. There's also a tiny lip on the combo res.
[MEDIA=imgur]3FXMiRY[/MEDIA]