71 c30 project

[moose1008]

hey guys i have been curising this forum for a while, I have recently bought a 71 chevy c30 c&c. Been working on it when i can, between kids and job i dont have a lot of time. So far I have pancaked the from crossmember and cleaned and rebulit the whole front suspension. Made upper and lower bag mounting plates and cups. Now here is where i need help, i have a 12v cummins in my shop that was slated for my 85 k30, but i think i want to put it in the 71. What size air bags do you guys think would be right for this? I have some #3800 bags already but mocking them up in the front suspension they look hugh, but i know im going to have a lot of weight up from. wondering if i need to go with #2600 bags. I would be very grateful for any advice!

This is the truck the day I picked it up. I will update as often as i can with pic, thanks again.