Here are the parts used to make the model: 1. Excelsior saucer, unmodified. 2. The three Excelsior neck pieces, glued together but placed midway/back on the secondary hull. 3. Reliant impulse engines (would need to cut this off of the back of the Reliant model), placed behind the Excelsior back neck piece. 4. Bottom half of the Reliant pylons (would need to cut them off of the rest of the pylons), placed on either side underneath the saucer. 5. Excelsior secondary hull, possibly without the deflector dish piece. 6. Excelsior shuttlebay, placed in front of the secondary hull. 7. Excelsior tractor beam piece, placed underneath the shuttlebay. 8. Enterprise-A shuttlecraft top piece, placed behind the Excelsior back neck piece. 9. Enterprise-A shuttlecraft bottom piece, placed under the back of the secondary hull where the tractor beam piece normally goes. 10. The back half of another Excelsior secondary hull, turned upside down and glued to the underside of the secondary hull. 11. Two Reliant nacelles.