I didn't do the connectors yet because they haven't arrived yet but I will be using them, the ones I ordered are from US Cartool and they are made of 1/8 thick steel, should work nicely since they are contoured to follow and tie into the floor the same way the front and rear subframes are made. As for the sewing machine motor I guess it does look pretty small sitting 2 feet below the 340. It's a 289 for a 1968 Mustang I'm building for my daughter, It's been put on the back burner till the Duster is done. Sorry to all the die hard Mopar guys but I'm partial to Mopars and Ferds. No Chebby's allowed on the property!!!!!! Kev