How many miles is on it.
does the engine still run smooth any knock from below.
First thing i would do is remove the head and inspect ,
Head in good shape ,block, cylinders badly worn or not .
these engines are very good, never had a problem when it comes to changing the head gaskets .
Would advice to replace the water pump, timing belt ,seals ,tensioner, etc.
do a vavle job and adjust valve cold .
Indy shop owner!
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Life at its best, Dominican Republic.
With determination and will, you can do it.