Slant 6 timing help- Torqstorm and Sniper EFI

Those look like 3/8 npt ports and if that’s the case I wouldn’t use that catch can. I’ve made the mistake in the past using venting systems that are too small and you end up chasing your tail. You could try it since it was free but I bet you’ll end up replacing it. My recommendation is to look at some of the motion raceworks stuff, Top Loader Billet Oil Catch Can (Dual 10AN Port) 32-100
Their junk is very expensive but you’ll never have to buy it again. I just bought the one I linked above for my recent small block turbo build.