Wheelie bars are like parachutes and samarai swords. If you don't really mean to use it, don't take it out. So, whatchya got?
I don't get this what if you actually need them. Not everyone on here is building a 40's 50's style flathead powered A. I plan on My P/U needing them someday and it would be nice to see some 60's style wheelie bars. But on the other hand it's extremely gay to run them if you don't need them.
After you tear off the rear bumper like Dennis Wiles 3 window you may consider them. Everyone doesn't run flatheads or inline sixes that run 14's at best
If you are building something fast enough to actually need wheelie bars, then you probably already know how to order and attach wheelie bars to a frame. Just saying.....
The best hot rods are "clean" cars without unnecessary crap hung on them. If your going to need them you don't need pics, just add them. For a "look", I don't think they're a good idea, but it's not my car.