if i swap out my springs for yj stock bent leaf springs. how much lift will i get out of it or will it stay same height? iam new to this stuff so please bare with me and thanks in advance

Most people see about 2-3 inches of lift from the YJ spring conversion kits.  Combined with a SPOA kit that brings you to 7-8" above stock, plenty of room for 33-35" tires.

When you say bent leaf springs do you mean lifted ones?  If so you will need to combine the numbers.

I think you will have alot of factors to consider into the equation when figuring out how much lift you will get from a set of YJ springs..... weight of the vehicle to include heavy bumpers, winch, ect.... also how many miles are on the donor YJ springs.
 
I was running a set of 2" lifted Bonz-Eye Samurai springs and switched to YJ 5 pack springs on all four corners. I was actually about 1/4 - 1/2" less lift after swapping to YJ springs. I made a set of 6 pack YJ springs to lift me back up a bit and now I sit about 1" more than I was with the 2" lifted Samurai springs.

Right now I am sitting at 23 3/4" to the bottom of the rockers on 31" tires.