Mercruiser 3.0 TKS Carb. How to replace TKS carb with conventional choked carb. 2007 Bayliner 175

TKS carb was giving me problems. I bought a much older (and cheaper) carb for a 3.0 181ci GM Mercruiser engine. Has been starting great since then. I would have preferred the TKS carb, but they were too expensive and I did not trust buying a used one because myself and a professional rebuilt the TKS carb 10 times and did not find the issue.