rx-7 not passing emissions, any ideas? Options

[ArizonaRed]

I know crap about rotory. My neighbor has an old rx-7 that wont pass emissions. He says it flies but he cant drive cuz emissions. He asked if i knew how to fix. I was thinking about making him an offer for it but i know nothing about an rx-7. any idea on how to get it to pass or any common probs?

[Newbie]

Ha ha ha, probably, one of the apex seals blew. Is it NA or TII? NA rotary engines tend to last longer, because of the fact that the apex seals don't go through much of stress as TII's seals do. I did hear that the FD version of the seals are stronger than the rest. It would be expensive to make it pass emissions, and even though you do, you are looking at very high maintenance and expensive costs.

But for some, it's all worth it.