you don't have to spend half the $ & they are still stronger than a 9". i have seen guys spend thousands on 9" only to break them time after time. i see at least two or three a year get broke in heavier cars,i'm not saying their built or braced right i'm just saying i've seen alot of $1300 to$1500 third members get ruined and it usually take the drive shaft & tranny with.again guys this is jmo,i think 9" rear are the only way to go for tube cars & dragsters.