bed swap question

will a 2nd gen bed fit on a 1st gen. I have a '90 s-10 4x4 ext cab. Do the body lines match? some pic would be very helpful. Thx for any help.

I have seen them fit befor but i dunno if it is specific years or body styles.

It will fit somewhat, but the gap will be more. And the lines will not match at all..