david
your 202 takes H4 headlight bulbs, H3 for fogs.
there are many bulb options for you, different wattages, colors.
your sl takes a 9004 bulb, a pretty inadequte bulb.
to upgrade the sl's lights, you'd need to either get , 'european headlights'
or OEM mercedes 'high intensity discharge' aka XENON lights. both types can easily be retrofitted.
[url][
http://www.bekkers.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=BI&Category_Code=mhlightsl/url] has good info on these.
peter