[Andy Besic]

I agree with Ron. Disconnect the sway bars. I love racing my Alfa in the rain...it's the only way we can beat the Lotus's and Porsche's. I found that using a gear higher everywhere can help with throttle control. Most important thing is Rainx and anti-fog on the windshields. I have seen more races lost in coupes due to no visibility than poor set-up.

Some tracks are different, but you will typically get better brake grip off the racing line. Every corner is different as well, but I have found there is usually alot of grip just wide of the racing line but not quite in the "marbles".
Racing in the rain is the best way to learn car control/balance.