1994 eldorado

I own a 1994 Eldorado. The car has 144,000 miles on it
and still runs good, but I'm losing coolant and I suspect
it's a leaky head gasket. From what I've read about
this engine, it's a costly proposition to replace the head
gaskets, and with that many miles on it, it's probably
a better choice to replace the engine. Does anyone
know what northstar's will fit in this model? Also, I
would be interested in suggestions on where to buy
a used engine, and also suggestions on a garage to
install it (in the Phoenix area).

Thanks in advance for your replies.
badcadguy

there are salvage companies who work strictly through the internet, and via ebay...i would search around..you might even be able to buy a whole totaled car for less than just buying an engine.