Correct crossmember?s

[blazinzuk]

86 chevy crew cab, used to be an auto. I am converting it to a 465.

Which crossmember is the proper one for this truck, The 465 came out a one ton truck too it was also an 86. Seems I have a few stock crossmembers laying around and forgot which one the trans was hooked to. This is for a 4wd truck

 

[sweetk30]

that vintage would be a non flat crossmember.

a ( W ) or a single hump member will be correct.