I think you mean the ' Jetstream ' ,
same fit as 30 , 35 etc , Some cases are lugged & tappeed for these , later ( mid 70s ? ) arnt .
cording to this the 703 is the 35 / 40 job . ( these are the later type )
could find you a few of them , but we're ' across the water ' .
pictures are filched . Youd need to CLEAN any Ive Got ! .