change front clip 73 to 80 on 81 to 87 cab???

[lost_66]

Hi.. everyone...


here picture i draw where there is hole on front that design for 81 to 87 chevy cab..
that how i saw.. but also other picture i draw point where has 2 hole on front cab
left and right near hood hinge that design for 81 to 87 but.. how 73 to 80 can hold up
hood in back when you go over 55 mph? does it shake? 73 to 80 has support posts on left and right in front of windshield. 81 to 87 don't have support posts to hold hood in back only front.. so i wondering how it goes??
also other question... here picture file cab-1 i draw where hole on front of windsheild does it hurt when rain water go inside from hole make more rust? do it suppose to weld
cover hole if someone wish install front clip for 73 to 80? i just learning about
your experience. thanks Andy