Small Block & Big Block Chevy Specific - what do these headers fit

I found a set of headers in a barn the other day and i cant figure out what they fit. I cant get any pictures but the flange looks like o--oo--o and they are oval ports and the have 69090 stamped in them can anyone help me figure out what motor they fit?

first off......almost all SBC have that port design....2ndly...its a HEDMAN Header part #...for a truck i think.

Yeah...i just looked on their website...it is a painted street header for a SBC...it fits several 2wd, 4wd, suburban, K5 blazer, trucks.....various years and engines from 63-91