Mounting Side Steps

Mate my old ones were bolted to the chaise and the new ones I am now making will do the same, it’s a lot stronger than body mounting and has the plus of if you drop the car onto the bars wile out 4WDing the body doesn’t get dented.

Just look for holes in a chaise that are in the same place as you wish to mount the brackets, other wise just drill mounting hols where you need em being careful to look for fuel lines ECT, 2or 3 M10 sized bolt per bracket will be sufficient to secure them.

Wouldn’t weld them on will just crate issues in the future.

I am using 30*60*2.5mm Steel rectangular tubing that will sit directly below the sills, was going to use stainless steel tube but with the design i had couldn't get a Fit I was harpy with so now got 4 odd metres of 2.5-inch 2mm thick 316 s/s tube in my shed that i got to find a use for LOL

Cheers.

Don't drill the chassis.
If you are making steps then make them strong so you can jack your vehicle from them. 10 mm bolts are no good.

If using steel, You need to weld on a plate to the end of the rails where they will butt up against the chassis and make the plate wider than the chassis. Drill an upper and lower hole in the plate and then have a plate only made up with the same hole spacing.

Use something large like 3/4 inch or at least 5/8 bolts and nyloc nuts to then affix the steps and plates. The idea is that the chassis is sandwiched between the plates.

Hope I have explained that OK.