Quick question I got a 79 f250 with a seized up 351m I have a lead on frame towers from a 79 f150 that has an inline 6.. (I want to do an inline swap) is the towers a direct bolt in both are 4x4

 

Yes they do. There are 2 different sets. One for the 351m and 400 and another for the 300 I-6 and 360 FE.

Although the 351M/400 towers also fits 302 / 351W and the I-6 / 360 also fits all the other FE's, they weren't stock for a 4x4.


You can see the difference in the angles of the mounts. About a whopping 15 degree difference between the 2. BUT!!!! Sometimes it is required to use different holes on the frame. If I recall correctly, the I-6 is moved forward a hole to compensate for a longer motor.

I've also ran into this swapping transmissions but that's another story...