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3/16" should be sufficient, the factory frame rails themselves aren't 1/4".

However, whats more important than the guage metal you use is how you join your extension to the frame. if you do enough bracing and have enough surface area, 3/16" will do just fine.


Well my plan is to have the 2 inch square tubing on top of the two side frame rails, going back 9 inches on the Pass side and 4 inches(steering box in the way)on the driver side. Ill also gusset the middle over and under the front crossmember.

I was also wondering if it is neccesary to plate the front cross member with something a little thicker, before welding to it. I just can't see the walls on that holding up to much abuse. i have a bunch of 1/4 inch flat bar that i was thinking about fishplating it with, but i do not want to waste my time if this isnt neccesary

Smiley thanks for the kind words, I have gotten quite a few comments about that plate at gas stations and parking lots. Mainly, "what does your license place mean," but there have been a few that no what it means.

And Yes the Mazda has the ultra cool oscillating vents, and quite a few other features i have never had before, like A/C and Cruise control haha.


Peace
Joel

1990 Isuzu Spacecab, SAS 95% done

'06 Nissan Sentra SE-R Spec V