Edelbrock manifold questions on a 396

[mikewarme]

I installed a new manifold awhile back. It is a 2161. I have attached a photo of the alternator bracket problem I am having. My truck is a 69 and the bracket is a 69. Edelbrock says to use a 68 bracket and it will be fine. I ordered a 68 2 times from different sources and no difference. Whats up ??!! LOL

Also what have you guys done for heater plumbing with these manifolds? Should I drill and tap a fitting on the manifold where the stock location is ? OR any photos of your set-up?

Thanks!!!!!