What model do you have and how many leaves currently? Front or rear? You will never truly get a decent ride. Warren
Depends entirely on what the body is. I took 3 out my RPU and it rides fine. But unladen the truck is very light at the back.
I did a bones style ch***is for a customer for his steel Henry deuce 3 window and used a worn out original A spring and I think he left all 10 leaves. Rides good.