Is it stock '86 - '87 turbo block parts?
What type of pistons?
A turbo crank that is std std should bring between $200 - $300 depending on what it needs.... if it needs to be turned and will go 0.010/0.010 .... it is worth more money than one already 0.010/0.010. Most frown (there are some that do anyway) on running a crank that has been turned more than 0.010/0.010 for performance oriented engines.
Stock cam..... scrap
Stock rods.... not much.... maybe $150 for the set with the pistons unless they are forged pistons....
These prices are my opinion.... and should be in the ballpark of what you might see on the classifieds here.....