full flow case

[sdp65]

So I have my type 4 all apart and am going to smooth out the inside of the case and remove all the burrs and sharp edges and index my oil pump (30mm type 1) and am wondering what else I should do to the case at this stage before I start to put it all back together.... I will put an external oil cooler in and am wondering what is the best way to get the oil from the case to the cooler and back again, anything else anyone can think of would be great as well. I NEVER want to take this engine apart again.