I keep talking about gettin 4" lift spindles for my truck to get another inch (versus my 3" spindles) so I might be able to fit 37's under there, but every one I've asked says that the 4" aren't as strong because the axle arm is to low on the knukle body... Is this true? Is this a dangerous part? Anyone have them and have problems with your wheel falling off? Any feed back would be nice... (hopefully good)