Can someone tell me what size fan blade is supposed go on a 62' 327/300hp with powerglide. My 62' AIM lists a part number and that it is a five blade fan but does not give the size, I also have not been able to find it in my parts book. I have seen them from 17" to 17 3/4" and most of the catalogs I have looked in just give instructions to order by year. Any input would be appreciated. Thanks