Let see:
$150.00 - Head Gasket set w/ new Head Bolts
$150.00 - Heads Resurfaced, Pressure Checked, and valves vacuum checked.
$55.00 - Water Pump
$30.00 - Timing Belt
$125.00 - Timing Belt Tensioner & Idler (You want to replace these while you are there)
Total Parts = $510
If you want to save...