1992 mazda miata new michelins,B power package has engine noise READ listing!

I drive a black rusty banged up 93 miata that runs perfectly,I bought this blue 92 to swap out its noisy 1.6 with mine....ive lost the desire to do it....so,I'm just going to keep my rusty 93 as is....this is a 92 with a nice clean no rip interior a fairly new soft top,(though both lower corners are starting to pull at window (see pics) power steering power windows cruise,and 4 new michelin tires.Has a rust spot on body down low in the black in front of right rear wheel.(see pic) Clean little car worth repairing.Runs and drives.No leaks,no check engine lights on no airbag light on.Drive right onto transport. I wouldn't drive it any further than that.I think its a rod knock,pretty loud,could be something simple,I don't know...It starts right up runs smoothly and has great oil pressure.Sold as is.Clear clean title.GREAT car to do a V8 conversion on.