Iv done alot of reasearch into these and from what iv read the good quality ones are very strong, alot of drifters use them which means obviously they can take a beating, im sure our ff's wouldnt put more horisontal strain on them that that.
Telling which are good and which are bad quality on the other hand is a bit tricky, i.e which brand etc.
lmk if you find out anymore info.