/6 to 360 swap

I bought the Trans Dapt kit for my 74 Duster conversion from /6 to 318. The original mounts were spool mount type. Nothing lined up. The TD kit specifies to 1972, I don't know if this makes a difference. I sent it back and bought the Schumacher kit that was made for 1974 models. I had to modify the drivers side mount as per the Schumacher installation instructions, with a little cutting and grinding, but it was no big deal. When I dropped in the 318 everything lined up perfectly, level and the transmission lined up as well.
I don't think I was doing anything wrong with the Transdapt kit, the drivers side mounting perch was tall on my Duster, I don't see how the Transdapt kit would have ever worked in my case.
Just my two cents, It set me back a week waiting on the Schumacher mounts once the TD mounts did not work out. Has anyone else experienced an issue with the TD mounts when converting from existing spool mounts? Maybe I just didn't do something right..............