72 lwb air bag questions?

[panic66]

Hello all! I've read through pages and pages of air bag options but i just had a few questions i wasnt clear on. I want to run air bags all the way around, im not trying to lay frame, just get pretty low and have a real nice smooth ride. From what i read this is what i came up with

4 d2600 air bags

front upper bracket and lower cup from suicide doors
http://www.*****************/bag-brac...-port-brackets

Bolt in c-notch from suicide doors
http://www.*****************/notches/bolt-c-notch-kit

of course everything depends on cash, so if the money is there i will be doing an air management system at the same time, if not it will come a little later. This will be our upcoming spring/summer project, i would also like to take care of big disc brake conversion at the same time but like i said it depends on the cash flow.

Ok now for my main questions,

My uncle installed tublar lower control arms back in the late 80's early 90's these control arms actually have a circular "cup" in them. so my question is do i need the lower cups? Also if i do need the cups the just sit on the lower arm you dont bolt them down?

Here is some pictures of the lower arm, sorry for the bad cell phone pics.





Also i read that these bags have a internal bump stop, do i need external bump stomps?

Here is some pictures of my 72




Thank you for taking the time to read and for any suggestions.