Also posted on TBrix. I've got a freshly pulled 405 head from a 1981 B23E. The head appears to be in good condition, but I would definately have it cleaned and checked. These heads are essentailly the same as the 531 but with K-Jet injector holes (can be blocked) and Pulse Air on the exhaust (easily blocked). I'm looking for $175 for the head plus shipping (will be in Calgary in two weeks).

I've also got the K-Jet fuel distributor for this head. It is bigger than the B21 fuel distributor and has the same injectors as the Turbo cars. Includes fuel injector lines, fuel line in and return line, CPR lines were cut before I got the distributor. PN 0 438 120 076. Looking for $75 plus shipping.

I run this same set up on my B23E with an RSI Stage 1 NA cam and the distributor handles the ported, big valve head and cam with ease. Here are the pics.
Head:





K-Jet: