Man thanks for your post! I went to there sight and looked at those. They are sooooooooo nice looking. I am going to order a set for my Dart. Heck I might order a set for my other dart to!! No sense and making some home made put together ones when there are ones that nice out there!
Now I just have to find some one better than me to weld them in! LOL
You can/could also just buy the US car tool sub frame connectors that don't require you to cut through the floor but DOES weld to the bottom of the floor.