74 Plymouth duster, Need help with radiator

so i have a 1974 duster, with a lighting kit and AC all those goodies, but my radiator is original and it took a complete dump on me.

so i have been searching around, some shops told me it would just cost to much to rebuild the one i have, i found this one cause the side cut outs look correct to what i have.

heres a little bit of details
its a 5.2 318
1974, everything is pretty much original, the shroud i think is original as well and thats where my main problem lies (read below)


http://cgi.ebay.com/ebaymotors/PLYM...Q5fTruckQ5fPartsQ5fAccessories#ht_5080wt_1165

the only thing is, where does the shroud mount to?!?!!?
cause i dont see any holes for it to screw in near the end of the fins, they look like clips?! Also i already tried Champion Radiator cooling, the radiator was perfect but whoever cut the mounting holes just did it wrong, i dont think they cut any correctly for my year.

it looks like a really good radiator and it looks like it would mount perfectly but the shroud has been bugging me a lot.

can anyone tell me who has knowledge about this, if this Radiator is a correct fit for an all original 1974 Duster


anyways i really appreciate any help from anyone, im tired of letting my car sit on my mechanics drive way, and i need to know if its better to rebuild it or try and go for something like this.