I have a 91 Sundance, posted about it here before. Just got it a few weeks
ago. I had some cooling and heating issues, got those fixed. The problem i
have now is the Stock temperature gauge. When i first start it up, after
about 5 or 10 minutes the gauge goes all the way to hot, ...

Any guess at how much it would cost to replace the rear main seal on this
engine ?
thanks,
Nick