I've read some information on these cars with blown head gaskets,i found a mechanic on craigslist that said it would be $600 to repair and he has to send head out to see there is no cracks,should i do this or should i see if i could put another engine in and if so where would i get another engine?the car only has 95Kmiles runs and looks good otherwise,but gets alot of use as it belongs to a mother who dives to work and school,please advise before i hire machinic.thank you