52mm throttle body..VVC or MPi?

Ok so have finally acquired a TV5 52mm Delorto throttle body (£45 delivered) and the weather is not helping today with it being wet and windy. So have a little bit of time to stop and think where it would be most benificial.



"Elsie" the VVC has a de-wedged 48mm TV1 fitted .................. now do I swap that onto "Blue 33" the MPi and fir teh 52m to "Elsie" or................................... do I just fit the 52mm body to "Blue 33" whom has her original plymer body still which is starting to stick in places?

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