Getting out the welder

As can be seen in the photo, I've cut the side reinforcements for the spring mount. You can easily see the gap on the inside which is fixed by putting a bend on the inside upright. Easier said than done. It actually took a lot of effort to bend the 1/8th plate, which reassured me of the strength of the final product.
I'm just about ready to start welding. Thanks to Andrew for lending me his welder. It is a wire feed 110 volt, which at its highest setting is about the minimum power for this job. By running the bead quite slowly I am able to get welds deep enough, though.
I welded together the 3" tube and the sides in the vise, which was quite simple because I could flip it over as a unit and weld on the flat surface. Once this was done, I then drilled the 9/16" holes to accommodate the spring bolts. Then a bit of cleanup with the angle grinder.
Carefully tapping the finished mount into its spot on the frame, I tacked it into place. You can see in the photo that I inserted a bare bushing tube to eye up the placement. I welded the bottom of the bracket to the frame itself, and seams inside the square tube as well. As a final step a bit of spray Tremclad was applied. The first mount is now complete. I can now breathe a sigh of relief that I haven't screwed up the frame (yet). A quick measurement shows that I've gained 1.5 inches in height from the original mount and about 5/8" backward movement. This first one acted as a prototype for the other 3, with the rear actually being quite similar. I had made cardboard cutouts of all parts in the first place, which came in handy now. the right front original mount came off and was ground to a flat rectangle in no time, as did the left rear. So far, I've left the right rear intact for reference purposes while I piece together the left rear. the major diference on the rear is a bit further length, and the angle I'll use is 0°, not 10° off like the front.
The photo shows the mocked up assembly for the rear.
In the case of the rear mounts, they project backwards at an angle so to get a 1.5" increase in height, I have to measure significantly further out from the base of the tube. This ends up moving the spring back a little as well. My estimate is that I'll end up about 1.5" backwards as well as 1.5" higher. This doesn't hurt my feelings, as I've found the rear axle seems to be a bit too far forward in the wheel wells of the 88, so this should centre it.