360 main caps ??????

Hey everyone,

So I took my block all the way out today and noticed it is missing the rear main cap and two of the middle ones. This block is a 360 and has a 1971 Casting date. I just went to Pick your Part and found a 360 with a 1977 casting date. My question is; Will the Main Caps off the 77 block fit or work on the 71 block? If so, I will run back down and take the caps of the block....

Thanks,

Brian