Re-using 2010 rear suspension on 59 frame

[brianp01]

I am currently building a '59 3200 step side, we are cutting it down to a short bed and installing a MII front suspension. The drive-train will be coming from a 2010 GMC Sierra. I am a total newbie at this but learning as I go. My question is would it be possible to re-use the rear suspension from the donor truck? From what I have read the 2010 springs are about 8" longer than the 1959 set. I imagine I would just need to relocate the perches on to the 59 frame to accommodate the larger springs?

Does this make any sense? the other alternative is going with a lowering kit from TCI. It looks like this kit has new perches that bolt on, so that got me thinking about the possibility to re-use the donor trucks suspension and save myself some $$$.

Any thoughts, suggestions, help is greatly appreciated.

Thanks,
Brian