The "vbac-friendliness" of a provider seems to change all the time, unfortunately. I can give you a few suggestions that you can try but I don't know for sure with any of them!
I've heard that the midwives at Pennsy Hospital have been supportive of vba2c. Dr Bader (at UPenn, I think) supported a vba2c on one of those birth shows. The Lehigh Valley midwives up in Allentown have supported vba2c. The back up doctor for my midwives, Dr Burbella, has supported vba2c at Capital Health in Trenton (though he said that he might not be as supportive if you've pushed for hours 2 time and haven't been able to get a 9 lb baby out but I believe every birth is different and positioning makes a big difference with how easily a baby can come out or not; the advantage of fully dilating already is that a doctor has reason to believe he won't be waiting around forever for you to dilate; he just needs to give you a chance to push again and if your babies have been smaller that could be an advantage). Dr Bailey at Lankenau (do a search for him on this board) is known to be vbac friendly but I don't know about vba2c. This practice www.jdsinger.com
told a local doula they would support her in a vba2c.