Slant six intake manifold flanges, anyone got a cad file?

1-3/4" is an HS6, I believe. Sounds like you got them off a Triumph TR6. I can confirm the scans are actual size by putting a scale bar on them -- check the scale bar on the printout to make sure it is at 100%. Of course, it will have to be tiled across multiple pieces of paper unless you have a large format printer, or you could take it to a copy shop and have it printed on a roll-feed printer. I can do the tracing this weekend.