Graf cyl heads
 

Has anybody any info on the Graf 5cyl cyl head ? John Button used a 4cyl version in his mk1 golf rallycross car in the late seventies early eighties and to date its the only known car to use the 4 cyl head.Lionel D`hondt used the 5cyl version on a quattro in the early eighties,has anybody got any info or links to this car ?
heres a pic of the 4cyl version

http://i150.photobucket.com/albums/s...ps0c3988e2.png

Hope somebody finds something. I just googled "Lionel D`hondt audi quattro" and got a bunch of info but no images of a 5 cylinder GRAF head. I have some photos of the 4 cyl version and would like to know more about the 5 cyl version too.

http://www.classic-audi.co.uk/forum/...1&d=1451333426

Fascinating.... Hope you guys show and tell if you find anything..:tup:

Theres a thread on clubgti on them iirc, 4cyl though was the only version as far as I was aware from reading about them a few years back