wu11ie is correct in that purchasing whole C doors is an unnecessary expense. Neither the 3 nor 5 door C is of use to the Combo owner. I have found this out to my cost (in time, as much as money) with leather door cards. The 3dr ones I got as a complete interior straight away didn't fit so I hunted >2yrs to find 5dr SXi+ front door cards only to find they're not right either.
I have an Opel Combo Tour, originally Spanish market 5-seater, and this comes with A/C, electric front windows but wiggle-waggle mirrors. I read somewhere that, if your Combo has heated mirrors, this makes life easier and you could get away with door looms from an unspec C - but I might be thinking of electric mirrors. I think there are tutorials on retro-fitting electric windows to basic Cs and will have a look for a link in a moment.
You will have to put up with the doorcard hole that jewels mentioned because C cards are no good and leccy Combos are a rarity in the UK (quite common in France and Spain - even the electric mirrors can be bought). Another problem I suspect - can't confirm - is that the leccy window regulator and motor from a C, plentiful and cheap though they are, isn't quite right. My passenger one ups and downs fine but I've had the driver's side replaced twice (brand new the last time) and I think they've had to settle for C 5dr ones because the window raises wonky, pushing the glass to the front unless I guide it up straight with a spare hand (awkward). The duff one I took out had bent badly. Can't be definite without researching, but it might be that the Combo regulator is unique and therefore almost unknown in the UK.
If I'm right, the late (in the UK) Combo SE or a Tour converted to WAV at the breaker's might be your best source.
This thread might help:
Right, ever since I put in my progress thread that I done an electric window conversion, I have been getting PM's off members asking whether or not their C is capable of having a conversion aswell or not. Basically, these are mostly off people with the early prefacelift SXi models, as people...
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