As part of the ongoing process of de-cluttering my engine bay, this weekend I fitted some gas struts to the bonnet.
After scouring the local scrapyard for something suitable, I settled on a pair of tailgate struts from a Fiat Cinquecento for a tenner. These are about 13" long when closed, and 22" long when opened.
Here's a couple of general views of how they look:


At the top end I welded the edges of the cross-member to the underside of the bonnet for extra strength: (I need to re-paint the car sometime anyway so I wasn't bothered about the welding damaging the paint on the top of the bonnet. And excuse the welding! I'm a bit out of practice ...):

Bottom end goes here:

And here's a shot of the bonnet open. As you can see it opens much wider, which helps with general engine bay access:

When you open the bonnet, then about half-way up the struts kick in and lift it the rest of the way, and it stays up very solidly. And not too much effort to close it again.
All in all, a very simple and satisfying little job.
Ed.