Simply put, what you cut off of the present post is exactly what you will take off of the telescopic post & swap the ends. This will allow you to use the same mounting position & connecting tie rod. I don't recall right off the top of my head the exact length cut, but if I were to guess I would say it was 8 to 10" from the bottom. If I can, I will take a look at mine this afternoon. I have been looking for the pictures, so far no luck, I have one more sd card to check. I did post them here when I did it, but, the sites board has been upgraded since then & as such, they aren't here anymore. If you follow what ezra & I have described, you will have no problems. Just make sure when you tack the lower piece that you tack it in the proper position & the same length as the original, mark your work & take pic's as you go for reference later in the event you get interrupted.-Mezz