A slant 6 in '71 could have either a 230 or 903 transmission. V8 cars were all 230's. The floor shift slant 6's got the 230 too. I've never seen one with a column shift, but, that doesn't mean none were made. All the column shift ones I've seen had the 903, which IMO is a piece of junk. The '71 column won't fit your '66. Neither will the pedal assembly or clutch linkage without modification. What are you converting from in your '66?
