How about these heads for your b2k?

[SurfnSun]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2458957968&category=33617

I want them....bad

 

[*89x2*]

They look like they would flow however, they are bare castings at roughly double what I thought a bare casting from AFR is :confused (but it has been awhile since I checked their prices :eek)

Then there is this taboo... ---->>

 

[SurfnSun]

if Im correct the TPIS casting is slighty different that stock AFR. It was a joint project. These are fully assembled when you recieve them. With the 54cc chamber these things would make CRAAAZY power on a b2k