Well, what I've already given you is what I use. IMO it's the best; but if you don't like it, you can always try the Moss website.
There are several different (optional) windscreen assemblies; if you have one of the rare ones you may be in trouble. The bottom of page 99 in the SPC (link above) covers the most common variety for later (post TS60000) cars, with chrome frame, chrome stanchions, and bolts to hold it to the body.
It calls for (4) 552662 bolts, which TRF has listed for $2.19 each.
Also (2) CD.31441, which TRF (note that TRF ignores the '.' from the SPC) shows as "561206 SUPPLIED"
So, look up 561206, they're $2.29 each.
There's no illustration of the later type boot lid, but the text is reasonably clear. "Screw, locking handle to lid" 559419
TRF shows "SLP251 SUPPLIED HDW SCREW,OVAL HEAD,SLOTTED"
So, buy a couple of those, only $.69 each.
I know it seems odd at first. But once you get used to it, it's quick and easy. One benefit of using factory part numbers is that many other vendors use the same numbers; so you can (for example) use Google to search for them. For example, searching for "Triumph 559419" (without the quotes) turns up listings at Revington TR and Rimmer Brothers.