What to do about a bad NEC uPC1358H vert deflection IC

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Hello! I've got an arcade game monitor chassis with vertical collapse. It uses an NEC uPC1358H vertical deflection IC. It appears that this chip is long-obsolete, and I can't even seem to find a datasheet for it. I had this crazy idea in my head that I might be able to adapt a similar deflection IC (like a uPC1378H) to the task, but I'd want to look at a datasheet before determining how crazy this is. Any suggestions?