Thanks for helping me.....how do you check for a path to ground?

Hi! I have a Falcon Ranchero with a small six engine (I hope to get a 302 soon). I saw in a post from 2006 that you were talking about the bearings of the SROD tranny. I´m rebuilding an alloy srod (pulled from a 302 Ranger from 1981, I think) to use put in my Ranchero, but I didn´t understand if the bearings TO replace are the KOYO 83763-1; or if the 83763-1 ARE the good ones, the ones I should use?
Thank you
Regards
Max

Thanks for the reps.