√ This is CNC machined out of 6061 billet aluminum. It offers a 1 1/8" hole and a 3/4" hole. The outside dimensions are 3.78" by 2 1/8". This is raw aluminum with a machined finish. It can be anodized, coated or left as is.
√ This is a 2 piece design, the upper and lower half bolt together with the center bolts then the 4 remaining bolts bolt the bracket to the car. You can remove the top half of the bracket which allows you plenty of room to install or remove wiring then you simply bolt it back together then reinstall the car mount bolts.
√ This will not fit any car, fabrication is required. You need to drill or saw two 1 1/2" holes at a spacing of 1 1/8" then connect the holes via saw to create an oval (see last pic). Then deburr the firewall, center this bracket in the hole and mark the holes. Then simply drill the 1/4" holes and install your sweet bracket via supplied bolts and nuts.
√ TIP: if your firewall is clean or new paint stick the sticker on a rag or shop clothes first to knock down the sticking effect so it comes off clean
If you encounter problems during use, please contact me immediately.