In scale, the K-123 is about 12'' too short...I have built both AMT and Revell K-100's and both have good points and bad points...AMT cab is easier to work with and the fit issues on the frame leave a little bit to be desired,And the Revell cab is very fragile and prone to warp and break very easily, But the complete chassis is far superior to the AMT counterpart...The KW in my Avatar is a Revell unit(I used several cusswords when the cab was being assembled) And it turned out pretty well...I think!!! LOL !!! Roy