If you have an old Series III Steiger you have to make this upgrade, hands down no questions asked! You will have to do a little cutting to make the holes larger to accommodate these lights. No problem for a handy person with a torch, plasma cutter or metal jigsaw. Such an impressive upgrade for the price and factory look! Very bright white light that has a large coverage area out in front of you. Don't wait any longer and do yourself and your help a favor this summer and make the upgrade. You will wonder why you waited so long, seriously. Great product, great prcie and Kenny provides the best service!