absolutely fix it. If that's all that's wrong with it, just buy a gasket kit.
Buy an engine overhaul kit from Toyota. It'll cost like $400, but it's got every gasket, seal, and o-ring on the engine. You may not use it all, but it's worth it to have some extra seals and gaskets hanging around.
Replace all heater hoses and other misc rubber hoses with Toyota stuff.
Buy some ARP Head Studs and you'll be good.
Total parts investment ~$700
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