I just bought a 94 Eldorado this year knowing the Northstar was going to be an issue. I want to keep the old car because it’s so nice and you rarely see them on the road anymore. I took it to a mechanic to have the a/c charged and they said that blown head gaskets might be an issue in the near future. I called around most of the day and no mechanic in my area will work on the Northstar, but a Marine buddy of mine told me about swapping an LS4 out of an Impala SS might work since they’re both FWD. How hard would that be given the gap in years on both cars? I’d hate to toss a nice car because I can’t fix it.