Strong fuel smell coming in through vents in vehicle

On average the regulator is 45-90 dolars depending on where you get it. Acording to the book rate labor should only be about a half hour or so to replace, not including any diagnostic time. Cost on those depends on shops hourly labor rate, ($60.00hr = $1.00 min). I was guessing on the engine though and went with the 5.7L.