Swaped my 4" blocks to a site member for his 2" blocks. My 4" blocks showed an arrow with Front next to it. The 2" that I received don't have anything that appears different on them they both have a "6C34-5598-AA" on them but on the end of one it is stamped RMP3 & the other one is RMP4. Please help cause I need to get these on so I can drive to work today. Thank you.

 

Finally got through to a Ford Parts dept that told me the 2" blocks are same for right & left. Thanks