Oil Lines - front cooler, Will this work? Options

[Scott S]

Hi All -
I installed a front oil cooler using aeroquip lines (the non stainless/heavy duty type). The lines run inbetween the inner and outer rocker on the passenger side. No leaks in 2 years - everything is fine - other than I thought my temp would decrease more. I havent noticed that much of an improvement, which leads me to believe that I may have a temp guage issue (911 pressure/temp guage using the stock oil temp sender on the taco plate). The car will hit 215 when I am working it up into the mountains.
I had the idea of cutting the rubber line after it gets to the inner rocker and replacing it with off the shelf copper tubing. I thought this would give me a tad more cooling like the hard line coolers in the 911. Would this work if I double clamp everything?

Also - time for an oil change - how do I get it all out of my existing system? (IMG:style_emoticons/default/headbang.gif)