Hmm, some quite unkind comments amongst the helpful ones which is a shame.
Paul, it's your car so build it your way (I know you will anyway).
The latches Lancia fitted look like they came off the inside of a couple of doors in the bagni pubblici at a race track somewhere after the bonnet started lifting at speed -
'Luigi, what're we gonna do about the bonnet lifting at speed?'
'I dunno boss, I go for a crap and have a think about it...'
It's the little details like these that make our cars look
more authentic, not less, so just go ahead and fit them, paint them BRG and knock a few chips into the paint where the bolts enter the sleeves.
If you don't like them once you've done that just change them for something else. That's the beauty of building and painting your own car yourself, you're not going to be fretting over damaging your shiny and (justifiably) expensive pro paint job as you know you can touch it up yourself after any changes or damage, just like Lancia, Ferrari, Maserati, Jaguar et al. did at the track side sixty odd years ago, and it'll still look authentic, if not perfect.
If you decide to keep them and they rattle open you could always drill through them and add a securing pin, or go for a spring loaded alternative, like these -
https://www.thehardwarehut.com/catal...p?p_ref=296566
Keep up the good work, now get some paint on it.