Starting at the beginning of this design, well, except for the R-1830 DB-7 that has not been done in 1/48, though there is a recent kit of it in 1/72. AMT did all but the Turbinelite version and I picked up all these kits when they were available from AMT. I used the Vector interior which added a lot of work as usual, and is hard to see without a pen light. It does include the life raft, which AMT failed to provide and which is very visible with the cockpit hatch open. I redid the propeller shafts in music wire with copper tubing bearings in the engines. The fit of the AMT parts has been very nice. The landing gear is a trapeze like affair that looks flimsy but once all in seems quite secure. Small size shot under the nose floor and under the cockpit on one side secured with canopy glue provided nose weight.