Per internet search valve specifications:
Mopar performance P4876397 Stainless Steel 1.88" diameter, 3/8" stem, 4.98" long
Milodon 45645-8 Stainless Steel 1.60" diameter, .371" stem, 5.010"/4.93" 0.250" valve tip length (use with either 7 or 10 degree locks)
I just found Mopar Factory...