Lets say that hypothetically you find a 2000 Insight for sale in your area with 128K and a blown head gasket. The seller says that he bought it knowing that there was a head gasket issue and drove it until it blew. Could one simply replace the head gasket just like on any other car and just go on with life, or is the insight more prone to warping and cracking of the block and head? Could any of the systems unique to the insight be affected by the head gasket damage? What should be checked and what would one expect to pay for an Insight in this condition?