Happy New Year all! I am a long time member but I rarely post. I find most of the info via the archives. I read every current post and value the info and experience I get from this forum. I have a 51 8n my FIL bought for me in 1978. It had been abused, I was young and new to country living so my inexperience did not help. I have a Ford 4000 diesel I use for most everyting. I have been working on the 8n lately and replaced the front and rear tires and rims and had the sheet metal painted. About 25 years ago a gentleman rebuilt the tractor, (engine and lift). He replaced my rusted hood with a 9n hood. This 9n hood had been refitted with a thru the hood air cleaner so I have this hole in my hood because I still have the original 8n air cleaner which should be connected to a hole in the side of the hood but the hole isn't there. The gentleman who replaced the hood did not replace the air cleaner. I want to put something in that hole....My other tractor has a thru the hood air intake so I'm used to it. I can find very little information about this air cleaner except it appears this was a dealer installed option via a 'kit' provided thru Donaldson . I cannot find any air cleaner OEM or otherwise for sale. I have seen pictures but very little posted on this site. Can anyone help with any info on a replacement air cleaner?