Rear front spring shackles

[JPP]

Talked with Andy B and bought left and right spring shackles for rear of front springs. So they arrived unlabeled. Which goes where right hand thread on right side and left on left side, like lug nuts?  Oh I have 1950 B2B 1/2 ton. Thanks

[NiftyFifty]

Honestly...they would never back off either way...but I believe left had thread on drivers side and right on passenger 

[JPP]

Thanks. Will do.