Thanks for the replies. Y'all are giving me more to consider. I was already dreading the vacuum advance on the HEI distributor, but I almost choked when I pulled up a picture and saw the black coil housing and vacuum pull off the side of a quadrajet. At least the one I saw did not have an MC solenoid on top of it. I believe I do have a manual choke cable in the spare parts box.
Dad rebuilt hundreds of carburetors in his life. I rebuilt some, but most of my experience was tearing them down and putting them in the cleaner. Holley carburators were made in my hometown. I am guessing Dad went with TBI because he was tired of carburetors.
I guess another way to look at it is parts are still available for OEM carburators and distributors, but I wonder how long Holley sniper parts will be available.