1/8th is a bit thin. if there was any binding at all, they would twist something fierce. id run at least 3/16th. sd.com has made a name for being overbuilt. but for some ppl in the scene, its required.
on a side note, if i were building tabs for front control arms, id use 1/4" due to the side loads experienced by acc, stopping, and hitting gnarly potholes and such.
im plannin on runnin a few gussets and such.. and 3/16 wouldnt be a problem at all..so i think thats the plan... thanks guys.. finnaly a year later ima get goin again...im kindof excited
also, if you have an 1/8" tab, and you end up with undercut on the sides of your weld, maybe a 1/32 on each side, that makes the material only 1/16" thick, which will be its weakest point and most likely tear...