Pinion angle question

Speaking of blocks, dont use cinder blocks!!
Someone somewhere knows of a guy that passed away from a block collapsing.
Wood blocks or solid cement blocks.
I have a 01 ram I had the front end up with cinder blocks and left it for a couple days and they collapsed and the truck fell luckily it was overnight and I wasnt under it. It really made me think tho! I have done that alot I mean alot! The dart is on cinder blocks now luckily I have them turned with the holes down but I dont like being under it still tho