23-09-2020, 10:18 AM
Your bar is a cut down item from a later car (the original was about 3/4" wide) so this may help explain the ill fitting of the bonnet.
The rear mounting method was originally to put the end of the bar, which is flattened, into a clip, spot welded onto the scuttle with no securing screw. You can't see the clip on my photo's but I'll try and add one later. At the front, the bar was fixed with a 3/16" screw and nut to the rad bracket (Usually 2BA or 5mm is used these days). I'm sure it fits on top of the rad shell bracket. Fixed in this way, it floated longitudinally.
The rear mounting method was originally to put the end of the bar, which is flattened, into a clip, spot welded onto the scuttle with no securing screw. You can't see the clip on my photo's but I'll try and add one later. At the front, the bar was fixed with a 3/16" screw and nut to the rad bracket (Usually 2BA or 5mm is used these days). I'm sure it fits on top of the rad shell bracket. Fixed in this way, it floated longitudinally.