Fancy something BIG !?
Anigrand Craftwork have released two versions of the C141 Starlifter, in 1/72 nd scale, the C141A and C141B, as well as a C124 Globemaster. Not my 'bag', but should be impressive models. They're are a bit pricey, but then they are big models!
They have also released a whole host of 'different' subjects, including some unusual Russian stuff, as well as missiles such as the Titan, in 1/72nd scale, and some others in 1/144th scale.
They can be seen at Model Hobbies web site, currently in the 'New' section, as well as in the model kits sections.