change all loom etc!

basically use everything from the mk6 into the mk5.

not sure if the rear light connectors etc would be the same but if you use as much of the mk6 its going to be alot easier as the wiring for the fuel pump and the cut off etc will not be in the mk5.

also if the mk6 has any extras that the mk5 doesnt then it would also be easy to swap them over at same time.

EDIT

is it really wise tho trying to do the conversion in such a rush, would the car not do the trip as it is, you will always run into problems or niggles when doing a conversion in a short space of time!