I see a lot of lifted bro-dude-man pickups around town... most of em you can see 3 to 6 inch blocks proudly displayed :roflmao: along with the obligatory massive stacks in the bed instead of normal tailpipes.
Personal experience...
Went to the local spring rebuilder/suspension shop to get bolts for my 8.8 swap. Asked for longer U-bolts than I figured I'd need to make sure I'd have enough.
Counter Guy: "why so long bolts? you have any lift blocks in there?"
Me: "oh hell no, not a fan of spring wrap"
Counter Guy: "... good, keep it that way. You probably don't need bolts that long, did you drive it here? Let's check how long they really need to be"
If the pros disapprove... well, they probably have even more reasons than I do.