S8 exhaust flexi question

[Kazs8]

Alright guys
Need some advice Went to local exhaust place powerflow to get quote to remove all four silencers on stock exhaust system noticed the catalyst converter flexi on one side is blowing, garage suggested to just remove both cat flexi parts & have new stainless pipe welded as they can’t supply new flexi part in that size
So is it safe to remove the flexi parts replace with straight pipe ? Will it cause any problems at all ? Thanks