I have a set of NOS TRW Y Block lifters that I had planned to use in my new engine build.  Upon further inspection the lifters have some surface rust and pitting.   I don't want to chances, so I ordered a new set of Comp Cam lifters. I also have a set of the bigger tubular push rods. They are the same length as the stock push rods I removed.  The push rods have slightly bigger ball ends than the old push rods. Are there different lifters for these push rods or will I be OK?