Yeah so on my home from work running good at 50 mph then bam the truck starts hesitating and acting like its going to shut off and then back and forth so i pull off the road and it shuts off as i coast into this business parking lot.. I start smelling sulfer like rotten egg smell out the exhaust so i crank it back up and engine code is showing so i mess with the map sensor vac line and get it where it stays running and get it home with this bad sulfer smell chasing me. I knew the cat was bad its got like 200,000 miles on it and wouldnt let the truck go over 70 mph so now i need to find a exhaust shop to slip some bills too cut it off and weld some pipe up there for now. I already got emissions done so no worries till next year but by then i should have flowtech afterburner headers and true duals with dual hi flow cat.s and dual flowmaster 40's Also i have a ZZ4 intake manifold and a 4 barrel edlebrock carb Will my distributor run the truck with the TBI unhooked???