anyone here made an extended cab?

[jott_06]

Ive been pondering the idea of makeing my own extended cab when i redo my 77. It is in need of a new frame so i thought if i used a longbed frame and cut 8 inches off the back then bolt my short bed and cab down i should have a foot in between them right? Would a foot be enough for an extended cab that looked proportional or would i need to add to the frame? I plan to just cut the back wall out of my cab and use the rear section of another cab and some door skins to build the extended portion then maybe graft in the window opening out of another extended cab truck so i can use production glass in it instead of having glass cut. What do you guys think and if anyone has done it lets see the pics. Thanks guys,
Jeremy