anyone tried this? i was hoping the pump case would accept the 1.6 td top but that was a big no go. i did some measuring and it looks as tho one could just have the end of he pump machined to fit the 20mm bushings? i have a few spare pumps kicking around now so i think im gonna give this a go, it would be a great swap for the idi guys or the m-tdi's upgrading to the 14mm pump head.