[M3to335]

I was considering taking off the OEM oil cooler and throwing on something a bit more efficient. After seeing what they go for on this forum, I nearly crapped.

A buddy of mine with a C4 just picked up a nice standard oil cooler online for next to nothing. I realize some fabrication i neccessary to plubb the stock lines into an aftermarket cooler, but is it worth the several hundred extra dollars?

I have access to a CNC mill, lathe, waterjet, and everything else under the sun. So, pending it CAN be done, what specifically will be my largest hurdle? Also, who has already done it?