I smell gas from my 6 banger

Closed-loop operation is terrific, and a good TBI system is definitely better than a carb, but Holley's TBI system is overpriced junk. Active thread on the subject of TBI retrofit is here. Replacing all the fuel hose with fuel injection hose (labelled "30R9") is an excellent idea; make sure to use fuel injection hose clamps (with rolled edges). I don't agree that an electric fuel pump is necessary or desirable on a carbureted vehicle; they tend to cause more problems than they solve (see here).