Awhile back I was directed to some Blueprints over at Model Magic. These schematics look like they were created to help with the building of the Enterprise "B" model in Star Trek Generations. They have been a great guide in creating a new parts kit. I have posted these as a preview to the Excelsior variants that I will be working in the next few weeks. there are some details that will need some attention(the reaction control thrusters on the bottom of each primary hull as an example).
The PDF below contains 5 views of the Excelsior MKII primary hull and engines, and the Enterprise B primary hull and Engines. It also contains an early version of what will be the Centeuar style engines. Please let me know what Ya'll think.
Excelsior Parts Kit