78 stepside long box value? whats it worth?

[chuckstahk]

I have a beloved 78 GMC step side longbox i want to sell but don't know what to ask. i think it is a rare variant as the step side long box wasn't a standard production as well as it is a 3/4 ton 4x4 with only 67k original miles? its kinda like having a rare dodge charger with a list of interesting options. but would people pay a lot if it was restored? hmmmm thats were you come in, what is the value of my ugly 1978 longstepper. thanks for your time.
chuck