WTS/WTT: twin plug heads

Heads: $2000
72 core MFI heads (mid-71 casting date), a couple of fins welded, all fins present
intakes ported to 38mm, exhaust ~37mm
new valve guides, valve job
twin plugged
surfaced and chamfered for 92mm cylinders
helicoiled all exhaust stud threads
Dougherty racing valve spring installed and height set
all machining and assembly performed by Supertec

Attachment 225703
Attachment 225704

Looking to sell outright, or trade for:
S pistons
40IDS carbs
S cams
SWB Webasto heater (complete setup)
anything else that might be interesting
...for my '68N