Odd old C10 shorty, 56” springs and 12 bolt

[kkgp81]

Check this out. I bought it sight unseen with the bed and just needed the bed. Kinda poking at it I noticed it has 56” springs. Thought it was kinda cool as it’s not something you see a lot on short beds. I have had several late 70’s shorties recently and none were setup like this. I think it’s a 78 originally.

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[bucket]

They all had a 12 bolt in those years. The 56" springs are definitely not very common though for a shorty.

 

[xm20k]

7 leaves plus overload BIG TEN maybe.

 

[bucket]

Is there evidence of factory installed dual exhaust? That would signify Big 10.