`71 leaf lowering.... HELP!

[71red]

Much needed help. I have a 1971 GMC 1500 2 wheel drive with leaf rear. I want to drop the truck 4.5/6 (front/rear) or somewhere really close. I fully expect to c-notch the rear and I have the spindles and springs for the front.

My problem is that I can`t seem to find anywhere (in the forums and online) any flip kits for this year. I even visited a couple of offroad/specialty shops and they tell me this is going to be a custom setup and most likely going to have to chop up my bed. I did find 1 brief write up on a DIY flip with home made saddles. Is this the only way for me to go? And is it safe?

Thanks for any and all input in advance!
Now let`s git this thing in the grass!!!