wiw ? blazer parts

[billsbowtie]

i have parted out alot of trucks but only 1 4wd so i need a little help on prices.
i found a 70 cst k-5 blazer f/s and before i buy it i need to no what some of the parts are worth. the guy that has it quite driving it about 15 years ago because he had to many auto's on the road at that time. everything was working good at that time but alot of the parts may need rebuilt now. here are some parts i would like to get fair pricing on.
ft.and rear end he said they are orig. and it stayed in 4wd till you got past 20mph.
double wall top about a 7 out of 10.
auto. trans not sure if its a 350 or 400 np205 transfer case.
it had a orgi. 350 but rear seal went bad and he had a good 307 so he put it in .
i think the drive lines are worth around $125.00 for the pair.
thanks for any help on this.