Yup. I was thinking of resizing the Mk 1 cockpit. to 2.5 meter using the silver tanks and the 2.5 single belled engine. with extensible nacelles (curtesy of IR and ARNE) on top of a standard Titan II. I'll also have to make a Module Generator to cope with the insane fuel usage of the ARNE's (Advanced Radial Nacelle Engine, by kerbtrek).