Where can i get the air filter element for my 87 600zl??

[r24fan]

I am having the hardest time locating where to buy the air box foam filter for my 87 600zl..
can some help please or put a link...Thanks in advance...Rob

 

[Ed]

You may still be able to get the OEM filter but I've seen new ones that were so old they were getting mushy. I used the 5/8" bulk UNI and cut it about 1/4" larger than the screen.

http://www.amazon.com/Uni-Filter-65-PPI-Green-Fine/dp/B000ONZT5E

The No-Toil dual stage stuff is good too but I don't know if it's 5/8" thick.