THIS IS THE IGN COIL ON ALL CT90'S K0 THRU 1979. MAKE SURE YOU NEED THIS BEFORE YOU ORDER IT BECAUSE THERE ARE NO RETURNS ON ELECTRICAL PARTS. IT COMES WITH A NEW CONDENSOR. "IF YOU HAVE A CL90 OR CL70 THIS WILL WORK, IT IS JUST THAT THE BOLT PATTERN MAY BE OFF" here is the scoop on the st90's fitment (thanks!! Dean) Jack, This coil is a fit on the ST90! Bolt holes match and the TEC# is the same as the original. The one difference is the leads. On my old one the green has a female connecter and the new one has a male> Not a big deal! Thanks, Dean S90 OWNERS, THIS WILL WORK ON THE S90, NOT SURE ON THE PRIMARY WIRE TERMINALS , LOOK AT WHAT YOU HAVE NOW AND BE PREPARED 38A NO LONGER AVAIABLE FROM DRATV @ *NOS OEM 30250-028-000 CONDENSER ASSEMBLY S90 CL90 OTHERS 30250-028-003 30250-028-005 (304J) TEMP OUT OF STOCKWORKS FOR MANY OTHER MODELS IF YOU JUST CHANGE THE TERMINALS 304J