i don't see why the TV cable should be such a huge issue, although you're not the first person to have mentioned it.
if it were me, i would buy an aftermarket cable and bracket setup. lokar sells both, or you can buy the cable from the dealer or better auto parts store. the mounting brackets (at the carb end) are also available in a universal style from edelbrock and moroso, although i'm sure there are others as well like Mr. gasket,..........
the only tricky part is to find the right "rotational radius" or whatever you want to call it. to figure that out, all you'd have to do is find a stock gm setup like a tbi unit and measure the distance between the throttle shaft and tv cable attachment points. now duplicate that distance on your 2f carb and you should be ready to go.