Rudy has some that he makes he goes by BULHEAD on here. You can also get them from Chassis Engineering http://chassisengineering.com/shopDetails.asp?CatId=10&SubCatId=22&ProductId=1545
I would also, Im currently building a 4 door to bracket race with and would like to see how the fit, what fab work I would have to do to make them fit a 4 door.
the best set i saw are from alston race cars, they are made from tube and fit perfect.they are bolt in or weld in and come powder coated.i would post a pic but every time i try it says the pic is too big.