I have done a couple and the only mod I have had to make was the slight rearrangement of one seat spring on each side for clearance. Other than that, no issue. Just heat it with a torch and re bend to suit.You may or may not have to do that.And this only applies if you are re-using the stock wheelhouse.If using an A/M wheeltub I think you are S.O.L.- no back seat unless a full custom seat?