Does anyone know if it is possible to have a dropdown menu on the detailed pages thats values are links to other sites and whos values are specific to that detail page.

For example: say i have two detailed pages
1=honda CRX
2=toyota rx7

on detailed page (honda CRX) I would like a drop down menu that I can add url's of suppliers who offer parts for the CRX

on the detailed page of (toyota rx7) a drop down with url links to suppliers who offer parts for the rx7 etc

Possible??