1. buy from source allowing returns, try, keep, return
2. check with Steve from VAS. He worked with/for VPI, his beloved TT setup is VPI, he sells and installs those VPI boxes, installed VPI box: mini-din to rca (I had Ortofon rca phono cable) when he re-wired my tonearm.
3. Pine Tree will make you anything you want
Made me custom phono, using long small diameter din connectors I sent him, for my Mission arm with long narrow din tube: my length, other end rca with ground for my SUT
4. I like XLR’s positive connection even if no other advantage, Locking RCA jacks with ground other end would have been nice if I thought of it at the time.
Of course, ground wire can be a simple separate wire.