Frame interchange between years?

[djohnsn]

I have been looking locally for a good replacement frame for my 78 K5 for quite a while without success. I can find later model frames in good shape though.

What is required to use the later model frame?

 

[Muddytazz]

IIRC the floor mount right behind the front seats are in a different place so you'd have to move/modify them.

 

[4X4HIGH]

IIRC 1978 is when the floor change started so anything from 78-91 will be the same.

 

[djohnsn]

I have seen in catalogs that 78-80 uses a different body mount bushing kit than later years. Does anyone know what the difference is?

 

[4X4HIGH]

I think that 2body mounts are in a different location. No big deal to fab something