Well, Buzz, it seems like the first question is: "Where is it inaccurate?"

Are you going to do the math on the diameters and lengths of the various tubes? If so, Peter Alway's Rockets of the World has scale drawings of Titan II, Titan IIIC, Titan IIIE and Titan IV. Jack Hagerty's Spaceship Handbook adds a really cool Titan IIIC with a DynaSoar. Gordy at Excelsior Decals can make you a balsa DynaSoar . . . .

How nuts do you want to get?

David Weeks' hyper-accurate 1/48 drawings of a Titan II are available at Real Space Models. These depict darn near every bump, panel, conduit or other doo-dad on a Titan rocket. Goodness knows that you can add cardstock and balsa "fiddly bits" based on such a good drawing. While there were differences between the various Titan models, most of them were under the skin. Be aware that even the Titan IIs used for the Gemini program differed in details in the twelve launches. The Shapeways 3D printing site has a number of Titan interstages in various sizes that could be added to a build. I bet there are others.

There is (or was) a Titan II on its side at the Pima Air Museum in Tucson. Just south of Tucson is a Titan II silo converted to a museum. There's also a Titan II at the National Museum of Nuclear Science and History in Albuquerque. The Air Force Museum has a Titan IV. I'm sure there are others; those are the ones I've seen. Silos were in Arizona, Arkansas and regular Kansas. There may be museum pieces there.

So Buzz, what were you looking for?

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I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7