yuo cant get any that fit like the genuine lamps, but i have seen a few bongos with round spots at the botom, dont know any prices but, the genuine bongo ones go for anything from £80 to £140 notes
just got down to your local motor factor and have a look at what they have, range wise and measure up see if you cant find owt
as for the wiring loom, some bongos have them and some dont, if you get your head under neath and look where the blanks are, there may be the loom already there, just hanging down with a block thats got nothing pluged into it.
if you have the loom then it will have a plug behind the dash where one of the blanking switches are, if you dont have the loom behind the bumper then you will have to wire it all up