I need a steering wheel for my 73 C10. One of the prominent classic Chevy truck accessory merchants has the best price, but they show the guts for the column as 1970-73 and 74 on. They did the same for the chrome door trim, and I ordered the 74 on, and it fit. (Someone in the forum here said 73 and on were all the same for the trim.) Does anyone know if the steering column guts/horn hardware is the same for 73 on? Thanks.