Pirate Jacks disc brake conversion kits

I'm looking at Pirate Jacks for a disc brake conversion for my 68 with 4" bolt pattern wheels and 7/16 studs ( I don't want to convert to 4-1/2" bolt pattern and lose "the look" the centerlines on it give the car)
Has anyone used their kits and are you happy with them? Is there another kit out there that you can retain the 4" pattern and 7/16" studs? Most of the ones I can find upgrade you to 4-1/2" bolt pattern with 1/2" studs.