Well, if the right shroud is not available on the net parts suppliers, you are going to have to see if there are any available on junkyards that advertise on the net....and call any of your local junkyards to see if they have any 80s Chevy trucks. What about that shroud that Zieg85 offered? Are you sure you cant effect repairs on your existing ones?...are they missing big chunks or what?
Regards,
Henry