I guess you have three options.
1)use a TFT with scart entry : expensive
2)use an internal scandoubler and a normal tft : expensive
3)use an external scandoubler and a normal tft : expensive
I have got such an
external scandoubler for sale at the moment but those appear often enough at Ebay or you can still buy them new under the name Indivision or Toastscan ...
