I have many B28E engine and bosch K-jetronic fuel injection parts forsale, including metering heads, airflow sensors and other anscillary's . I have 2 sets of heads, both have the block and exhaust faces skimmed, and the valves are re-lapped in, and exhaust threads retapped. One of the set of heads has had 1.1mm taken from the block face to increase the compression ratio from 8:8 to 1 ( standard B28F) to 9:2 to 1 ( standard B28E ), so basically the engine will have abit more torque. These heads do not come with anything apart from valves, springs, collets and stems seals which are already fitted. you'll have to use the original cams and rocker assemblies from your original engine, but I do stock these as well. I also have unrefurbished cylinder heads but are in good condition as well.
Please PM me for any parts you might need at very reasonable prices