Scat split port heads???

[elroocky]

I've just seen on a site scat split port head on a type 4. it's the second set I see (on seen in france during a meeting, and the second on the net.. ) what about these heads? are they realible? okey for a daily ?or exclusiv for racing? what are the exaust availeble for these heads? as somehone got or used these head recently? i'd like info about them.. prices? valve size? exaust? and all the rest...

thanks
david