[riverider]

If it were my 03 Sorento I would be looking at my warranty.If you don't have any warranty I would find someone who could really tell you if it was a head gasket or cracked block or head. If you don't have a warranty and it's not just a blown head gasket. Cost around my best Est.$700 to repair. But if it's a crack head add another $1200 then if it's a cracked block your looking at close to $4000 unless you find a used engine then still it going to be $2500.
Bottom line it does not look good. How many miles are on the Sorento?

 

[riverider]

If you keep driving it like you have with this water getting inside your going to have a much bigger problem. Shut it off get it taken apart and get it fixed.