bush help

[dr50376272]

hi good people. im a little confused. i have a 1973 mazda rx4 coupe. for the idler arm, exactly what bushes do i need? have a look here, and tell me which i need:

http://www.nolathane.com.au/.php?part_number=45032

http://www.nolathane.com.au/product_detail.php?part_number=41001

http://www.whiteline.com.au/Plus/product_detail.php?part_number=W11531

http://www.whiteline.com.au/Plus/product_detail.php?part_number=W11010

thanks !

david