If it were me (and it was 3 years ago when I got my '89), I would drive it for awhile to see how it is. I always change 'all' the fluids within the 1st month. (My gasket started leaking last May, so I did a valve job, resurfaced the head, hand-cleaned the block, and reassembled it. Runs great.)
If it runs good, and no coolant leaks, or having to add collant, then flush out the system and reload with antifreeze, 50/50 mixture. I would go ahead and change all hoses too. And the rad. cap.
DON'T use a metal headgasket unless you are gonna have the block resurfaced, along with the head resurfacing. The metal gasket is very 'unforgiving', and will not seal correctly. Both surfaces must be very fine.
A regular headgasket will sqeeze down and compensate for some little irregularities in the surfaces.
They accepted cause of the gasket failure is the fact that the factory only torqued the bolts to 58 ftlbs. They should be 72 ftlbs.
This seems to resolve the problem.
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Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing.
TEMS, and some nice MODS. Sold to a friend 10/08/08.
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