They hide a lot of great smoke box detail, so I've never been a fan of lifters on Challengers. The only Challenger to retain them permanently was 3967 IIRC. Now, on 800's, that's a different story.
Looks better to me without, but if they "clip" on, put them on 1/2 the day and off the other 1/2. Keeps everyone happy. Niagara? Definitely with smoke lifters!
So just for learning purposes, if I decided to make a set of smoke lifters from sheet brass how do cut it without bending up the metal? I’m guessing a band saw but that’s a hefty investment. $319 from Micro Mark and it looks kinda flimsy.