Like Roberta, I sued the kit oil cooler from Van's, mounted on the left rear baffle on my O-260. I did do a fair amount of beefing up of the baffles in that area (some doublers and heavier angle) cause I didn't want to be rebuilding it later - probably overkill.
Cooling has worked great, and that is down on the Texas Gulf Coast, where summer lasts about 9 months!
Paul
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 -
N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com