It wasn't that difficult ...if you have the right tools . A 4.5 " grinder with a cut-off wheel or 2 , welder , we used a mig and something to cutout the steel for the notch if you don't buy the kit . We used a plasma cutter to cut the 1/4" steel plate . For the frame we found that if you cut along the bottom to the depth , up the face at each end , then cut the face at the top of the frame to remove an L shaped piece . This gives you access to the underside of the top of the frame to cut to the depth needed to match the bottom . This was all done with a grinder/cut-off wheel . We made a template with cardboard by laying it over the cut out frame and tapping it with a hammer to imprint the frame on it . We then cut out the template and transferred it onto the steel plate .
This is my son doing the dirty work !!
Thanks they're starting today, they wanted to make sure I knew it was only about 1" gain in BS and that it's probably a good 4 hours a side to do it right and clean. Your pictures helped Dynoman thanks.