I am hopping one of you engine gurus can tell me what I have and if my mags are rite for my engine. I bought a 0 time SMO- IO 360 A1A that came with rebuilt mags but I cant find them in the Lycoming parts manual with the part number or model number. the first mag is a Bendix S4LN-200 part number 10-163045-2, number two is a Bendix S4LN-204 part number 163045-3. nether one has a impulse coupling so I am assuming I will need the shower of sparks, is this correct and if so were do you get one I cant find any thing on shower of sparks on the INTERNET. can the Slick Start be used with these mags? the mags come off the engine. Thanks for any help.