Low gear set 904, pro’s and Con’s

thanks for all that.
car is on ladder bars, 275 Hoosier radial( 28 by 10) 4.30 gear.
It is a PTC 8 inch. I had it adjusted once already to the 360 I had in the car previously by Jason at Quick Draw Convertors in Ohio.
He comes highly recommended by guys I know who are veteran racers.
I definitely want to adjust the vert, if I do the low gear set, it would need to be at the same time I send the vert out.
Decisions, decisions .
what I really wish is I had a spare good footbrake transmission to swap in, and shelve my brake tranny after freshening it( don’t use the brake in it currently)

I have heard of guys using Jason at Quick Draw Converters, should be no problem getting it loosened. With the ladder bars I would say you should have no issue tuning the suspension to handle the low gear. I would go for it. I don't blame you on the footbrake deal. But if you are taking trans apart to put low gear set, maybe just swap a RMVB in at same time if you have one. If you don't have a valve body my dad has an extra RMVB from A&A with no trans brake he would probably sell.