Wow, its been a while since I have been on here but I am looking for some help & guidance in changing over from the FFR supplied Koni to QA1 coil overs.

I built my Gen 1 '33 (serial #600) 10 years ago and now as I am getting older, I would like to soften up my ride.
I am running a Chevy 350 and have the 3 link rear suspension with FFR supplied Koni shocks and springs.

Any help with which QA1 part numbers for the front and rears along with spring lengths and weights would be appreciated. I have searched the forum and am pretty sure I know what I need for the fronts (DD403 w/ 9" springs) but I am not sure on the rears as their are various rear suspension set ups. Who is running a Gen 1 with a 3 link rear suspension with a QA1 set up? What are you using in the rear?

Thanks in advance for your help.