Yard store tools
I have scratch built a Davis DA2A with yard store tools ( flush riveted -4's)
and my RV7. I am not a perfectionist by any means and found that the tools i got at the yard satisfied me. They also have a ton of used stuff, bucking bars, clecos, sheetmetal, leather hides by the hundreds. Sort of depends what the local aircraft factories are surplusing at the time.