Look on drivers side A pillar, if the tag there starts L4 you have a /6 body, if you have L6 it's a V8 body. The radiator support is different between the two bodies. The /6 car came with a 18"radiator,the V8 with a 22". If you can a V8 donner you can cut out the passenger side mounting panel for the radiator and graft it in to the /6 radiator support. Of course you will have to take the front of the car apart, and the engine out to have room to tack and wield things back. A lot of work but you will be able to install the 22" radiator. The V8 cars did come with shrouds (very hard to find) with 4 small brackets, bolts( 1/4X1/2) and square nuts that mounted to the radiator, that the 2 piece shroud then mounted to. Hopes this helps and gives you a insight into what you face, may be easier to go back to a /6 or do some creative fabrication.