1965 Dart 273 fueling options

I have a 4 DR Dart 270. I have a 4BBL Torker intake but it will not fit this engine. The way I understand it there are differences from 65 to later years making a 4 bbl intake for this engine nearly impossible to find. What Are my upgrade options?
I've heard that using later year heads will allow me to use the Torker intake but I'm unsure if this is fact or fiction.
What about running a Fitech throttle body? Anyone ever run one of these? Will it add any performance on the factory intake?
Thanks
So the bolts are smaller at 5/16 instead of 3/8 and they are at a slightly different angle so you would have to come up with some wedgie washers and smaller bolts to make a newer intake fit... Or... you can spend you know some more money and just buy a set of heads maybe even worked over and the intake will fit but I can't say the torker intake would be the best choice for what you're doing but maybe I don't know what you're doing...none the less...a dual plane intake would be more helpful for power to get up to speed quickly.