Anybody done one of these on a stock height windshield original 28 Pickup? Speedway instructions too fuzzy; not detailed enough. Like the position of the header board ; should it be upright or flat? Would the last(short) flat iron (which attaches to the tab on the top of each quarter panel) have to be lengthened from stock to get the upper irons more horizontal?It's just that the lower iron of the "triangle" slopes down rather quickly making for an odd profile. I guess I'd like the side profile opening a bit more rectangular Any upholsterers out there get my meaning? Appreciate any help from someone who's done a kwik top and there comments.