I've made parts you can use to modify aircraft kits:

• Airfix BAC 1-11 in 1:144
  • BAC 1-11 AEW Scheme 3 Radome to build the AEW version as seen in 'The Air Staff and AEW: Royal Air Force Airborne Early Warning Projects'
• various kits in 1:144
  • set of 8 compressor faces for Rolls-Royce Medway to be used in scratchbuilding RR Medway engines (I used this on my Avro 776 build)

This list shows you what parts you need for each version of the rocket. The links go to the Shapeways website, where you can order the parts.