I am wondering which size upper ball joint to use for the Port City Racing LF Upper control arm. 11.25" screw-in on a 2015 Rocket Blue/Gray?

We usually run the blue uppers, but going to run the PCR upper. I've messed with front roll center on my car before and have adjusted it. Knowing that, I am looking to avoid buying many ball joints and seeing if anyone has a suggestion to which size to buy.

Thanks for any input.