what about these headers?

[slowburb]

1.75" primary tubes are a a bit on the big side. You'd be better off with 1.5" or 1.625" primaries. For the cost they have to be better than cast manifolds, but are not completely optimal.

 

[1994chevymanual]

i dont think im going with those headers anymore i found someone in my area that has them after a few months the welds leaked and the flanges were rusting

 

[Pampo'sTruck]

I'm thinking maybe these. http://www.summitracing.com/parts/hed-69440/overview/year/1990/make/chevrolet/model/c1500

 

[Pampo'sTruck]

Or these. I'm worried that neither one of them say anything about the 02 sensor...http://www.summitracing.com/parts/hok-2452hkr/overview/