Its my car. Its one of the earliest B2-S 245HP conversions at Alpina in 71. I have all the build sheets and its documented with hercules filters not the air box. At this time they only had the earlier version of air box for the CSL which was a lightweight version with decal not the ones you see today in metal with the raised logos. Ive seen a few other e9's with my setup but very rare.
Yes originally a CSI converted at Alpina Kaufbeuren early in its life. I did add the side "CSL type" stripes and 16" Alpinas because they look better in my opinion. I still have the original early closed hole 14" Alpina wheels. When I purchased the car it did have the BMW ALPINA decals on the sides.
Alpina never put CSL Alpina stripes or CS Alpina stripes on any of their cars. Only BMW ALPINA on the sides of the hood, but to me a bit boring. The silver car of Carey Illda (injected CSL converted to B2-S pictured above), was the first to make them and we all copied.. The car was found in a rough state and was meticulously restored. Originally built for a Saudi Prince by Alpina, it somehow wound up in the states where Illda found and restored it and created those stripes..
LL-L502 B3 250HP car was a press car for Barbasol so those stripes were created for it. Only the two inka CSL's, the silver CSL and the Barbasol car pictured above, are "authentic" Alpina built CSL's. The others are non CSL's (white and blue car), or Alpina parts put on CSL's