7.25 suregrip

I have a 7 1/4 rear I am in the process of rebuilding, and is not completed. Still need to set gear pattern.
New parts:
3.91 R&P
Pinion, and carrier bearings (4)
Spider gears (4)
Axle end gears (2)
Sure Grip clutches
Spider gear shafts are good condition used (new not available).
Axle bearings (2)
Axle seals (2)

Axle housing has stock "A" body spring pads, and pads for inboard spring relocation. Axles are large bolt pattern.
I will sell as is for $500 (just about what I have in parts) or $600 completed, plus shipping. Pick up OK. If wanted completed will be about a month, as I have some real world stuff to do first.
Who and where did you source the parts from if I may ask? I'm looking to have a backup set if I should secure one of these.