If there are no pollution inspections in your area, you could retro to an early (75-80) distributor & carb. By just removing the stuff on it won't help unless you get rid of the feedback crap(carb & dizzy), it never worked even when new. I went to a bunch of classes in the mid 80s-90s to learn to attempt repairs on those ESC trucks. Of course this is all just theoretical, I have never actually done this to any vehicle

but I do feel it is better to have a vehicle that runs correctly w/o pullution controls than one w/pollution controls that runs very poorly.
Brian