uxcell 10Pcs Extruded End Cap Nylon, 20x40mm T-Slot Aluminum Profile 2040 European Standard End Cap Extrusion Plug for Trolley, Fish Tank Rack, Storage Rack, Black

Thanks! And for sure I can give you those dimensions. Ill make for certain when I get home, but in the meantime- these are the links to the material: https://www.amazon.com/Aluminum-Extrusion-European-Standard-Anodized/dp/B08X4PNQ61?pd_rd_w=GnqfQ&content-id=amzn1.sym.59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_p=59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_r=BD8P7TVF2RFSSTRME6NV&pd_rd_wg=rueyY&pd_rd_r=2f2ca023-7f90-4db2-826c-eb91af0af3a7&pd_rd_i=B08X4PNQ61&psc=1&ref_=pd_basp_m_rpt_ba_s_2_sc aluminum extrusions^ https://www.amazon.com/Corner-Brackets-Aluminum-Extrusion-Profile/dp/B09YQ1S9NQ?pd_rd_w=GnqfQ&content-id=amzn1.sym.59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_p=59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_r=BD8P7TVF2RFSSTRME6NV&pd_rd_wg=rueyY&pd_rd_r=2f2ca023-7f90-4db2-826c-eb91af0af3a7&pd_rd_i=B09YQ1S9NQ&psc=1&ref_=pd_basp_m_rpt_ba_s_1_sc brackets^ https://www.amazon.com/uxcell-Extruded-Aluminum-European-Extrusion/dp/B0DM5JN1VP?pd_rd_w=GnqfQ&content-id=amzn1.sym.59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_p=59fe5e4c-51b0-4912-8f07-69b7ad81293d&pf_rd_r=BD8P7TVF2RFSSTRME6NV&pd_rd_wg=rueyY&pd_rd_r=2f2ca023-7f90-4db2-826c-eb91af0af3a7&pd_rd_i=B0DM5JN1VP&psc=1&ref_=pd_basp_m_rpt_ba_s_3_sc extrusion caps^ If im not mistaken, I more or less just cut one of those extrusions in half with a grinder/cutting disk (those are the two uprights) and the long piece is uncut. Seems like i remember having maybe an inch piece that was a drop from the one i cut. The piece of flatbar is something I took from work. Its 3" flatbar probably 3/8" thick. It was BARELY wide enough for the bolt pattern on my SHH Thorn. I would recommend using 4" flatbar for that reason, but you could also just use the 3" like I did and make a base plate for your shifter and bolt that plate to the 3" flatbar with a flush mounted bolt, same fasteners i used mounting the flatbar to the extrusions so that the base of your shifter doesn't come in contact with the fastener for your base plate. Hopefully that makes sense. Anyway, I'll get you those exact dimensions when I get home.