VTS conversion, will i need a lamba sensor?

[stured]

Hey all, looked at the guide but it doesn't seem to mention these. However I bought my VTS engine and just going round gathering/listing other parts i need/want. I was thinking and the CAT on a VTS is below the car and on the VTR it is in front (Both MK 2s). i havent looked but i think i have the first lamba in the manifold of my VTS engine i bought, however...will i be needing the second lamba sensor? because i cant imagine the VTR Lamba even reaching never mind being the correct fitment! But it wasnt mentioned in the guide...Bought a decat for now but still want the lambe there ready.

Anyone got one?

Also, Ive been told the VTR radiator in the 2002 MK2s (phase three of the engines) Is the same as the VTS unlike the early MK 1s. Is this correct? Dont want to blow this head gasket aswell .

Im not sure i understand the fuel return either...surely it cant be that difficult (Not read much on it), if theres one guide for it...just follow that . Oh...anyone got a guide? Ha!

All random information on a VTS conversion is always greatly appreciated XD.

Cheers guys!