47-55.1 54 3100 conversion leaf spring kit help

[Mark in Indiana]

I’m have a stock 54 3100 pickup truck. The project is to keep stock ride height, a mild V8, 700R4, 67-69 C10 rear axle, front disc brakes, 6 lug wheels.
I’m searching for the rear axle assembly, complete drum to drum. I’m looking for softer ride leaf springs from and rear in the stock ride height plus the rear spring conversion mounting brackets/shackles/shocks/hardware to change from a torque tube to an open driveshaft. No lowering springs because I want to keep the stock, nice survivor truck look.
Do you guys know where I can find what I need? I’m actively searching but have not yet found what I’m looking for. Thank you very much for any help.
Mark