Small block headers: worst to best fitting. List your experience.

I got some hooker super comp 1 7/8 slip tube under chassis race headers 3.5 inch collectors with O2 bungs and no flanges...also have the extentions to tune them 8 long ones 8 short ones....also have some headman hustlers slip tube under chassis headers 1 3/4 with stainless merge collectors ....both are for 67-76 abody smallblock.....also have some ceramacoated JR's fenderwell big block abody headers 2" missing collectors..really cool and vintage....all for sale...but shipping would be astronomical....