84 tecate need help with chain lenth +2 swinger also piviot bearing #

[kasuki]

i have a tecate with a + 2 swinger i need to order a chain how long of a chain do i need for this set up stock gearing.also i need a number of a bearing in the shock an dog bone piviot there should be a number on the bearing so i can go to my local bearing shop and match one up.these are the last things i need for the tecate to get up and running.

[scooterroo]

usually when you go with a +2 swinger over a stock ad +4 inches of chain. 2 for the top 2 for the bottom. as for the bearings, no idea.