The price difference between new toyota head bolts and ARP head bolts is so small its not worth buying inferior quality toyota head bolts. I think factory head bolts cost somewhere near $60 and ARP cost around $90. It's really a no brainer, this is one thing you don't want to skimp on.
I bet the previous owner DID use a metal head gasket. But he didn't do the proper machine work to the block. I bet he didn't even hand lap it. That would explain why its leaking again. People think they can just slap a metal head gasket on and think they solved the problem. In fact, a metal head gasket is more prone to leaking than a factory head gasket. It's the bolts that fail on a bone stock supra. The safest route is to use a factory head gasket and ARP hardware, don't mess with a metal head gasket unless you are machining the block.
Go with a factory head gasket and ARP bolts and you should be straight.
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