None that I have seen or heard of
Why do you want a stud girdle? I think they are way over rated, a good set of main caps and main studs work excellent
I've built several RB and B motors using the Mopar ductile iron main caps with ARP main studs that make over 800 HP on the last 527 C.I. RB and my personel(SP?) 400 block 518 C.I. pump gas stroker makes 727 HP, lots of laps and some street driving with no girdle
I do use a crankshaft scraper and stock type Mopar windage tray, full groove main bearings with a high olume oil pump