New or old

[Chebbyfan]

Looking to put another frame under my truck. The truck is a 79-80 right now, with a newer cab. I cant remember, but someone told me to use the 73-80 frame, instead of an 81-87 frame, or maybe it was the other way around? Something about the front frame horns on one or the other. Can somebody help me with clarification? I want to stay with the round headlight look.

 

[legopnuematic]

73-80 is what you want, but 81-87 frames can be used if the body mounts for the frame are used and the frame horns are modified to fit the earlier bumper.

 

[Shorty81]

My truck has 79 frame, 86 cab and bed. No issues, used the 79 front bumper which I like better anyway.

 

[Chebbyfan]

73-80 is what you want, but 81-87 frames can be used if the body mounts for the frame are used and the frame horns are modified to fit the earlier bumper.

Is there a lot of modification needed to fit the earlier bumper? I found a clean Nevada shortbox frame very local to me. I understand the body mounts. I once put an 84 body on a 73 frame.