I would think a b18 swap would be alot easier than a k20. From looking before the main issue with the k20 is the height of the engine, and getting enough sump distance without poking out the bonnet
sure most td04 hybrids actually come on boost later than a standard one. especially a 20t vs a td04 13t. So youll actually have more lag for the same sort of power. Plus cost you 3-5 times as much. Standard td04 will see 230hp easy