how much drop can you get with stock T/A

[Hottrucks]

ok heres the short of it...
I have cuppped LCA and plan to put in the 2 1/2" drop spindles ( which will lay the stock X) andget me deathly close to the heater box so thats where the front will stop

But
on the rear I have a 2" pipe notch and have another idea for more drop (done stupid cheap and keeping my stock floor) I want to clip the frame rail over the axle out ...

the plan is to add a 3"x2" box rail from the front to the rear tie/weld it all in and plate it across the front and rear of the section where the frame will be cut out.
I'm going to unbolt the floor and add a 3"x1" rail to the top of the lip of the bed and then pull the sides up with longer bolts (lots of drilling) this keeps the body inline

any Idea what it will look like or if it will work?? my concern is that my bags are in the stock spring location and I think they will bottom out before the axle will bottom out to the new 3x2 frame??

other stuff I should put out there:

the 3" is what it takes to bring the tubs up to the stake pockets
I use the hell out of the bed ..like to haul wood or my Harley
I also plan to haul my boat (3500lbs)

thanx
Jeff

pics of my rear now in my build

[Hottrucks]

page 5 of my build for pics??

looks like I could gain at least 2 more inchs of drop!!! the 3x2 box will be V cut and welded to match the stock frame......Hmmmm I have another frame I wonder if I could clip it and ust that to raise the frame height?? would the curves fit??