wanna hear even more stupid? This guy i know has a truck with a 5" block on top of a 1" block on a monoleaf setup with air-over leaf bags ! Can it get any more dangerous than that?
you can run a 4" angled block without any problems as long as you tighten up those U bolts. I Don't know about you guys (and girl) complaining about your 3" blocks cause when i switched from 4 to a 3 there wasn't all that much difference anyway. you want a cheap 5" drop just use the 4" block and remove a leaf. I did and it works safely.
Keep in mind to that some states have a limit on block sizes. In Michigan you cannot use a block between the rear axle and leaf spring that is larger than 4 inches.