All side and rear windows in my 172 need replacement. I'm thinking of
installing bubble windows on the right front and left front for better
visibility. Anyone know about cost premium or speed penalty of these
over flat windows? If the penalty is no more than a few knots it's
probably worth it, but much more than that for an already slow plane
I'll think twice. Thanks in advance for any advice.

Jim Rosinski
N3825Q