On Mon, 30 May 2005 08:33:15 -0500, "O. Sami Saydjari"
wrote:

Is there a website I can go to find out the TBO and overhaul costs of
any given engine? Right now, I am curious bout the GTSIO-520-L on a
Cessna 421C.

factoryengines.com

probably about $50k each to rebuild. There's a reason the high-end
twins are priced so lightly...