Found these heads on another forum

[HAULIN IT]

Guys, I found these through another forum, thought they may be of some interest here. Uses stock type intake mounting, ect. Also they are available with or without a heatriser. Couldn't find a cost on them & don't know where they are cast (China?), but might be a good alternative...the smaller combustion chambers & better flow would wake up an average, good running engine. Lorne
 http://www.enginebuildermag.com/Article/36955/eq_announces_availability_of_new_vortec_cylinder_heads_for_1969_to_1990_350_chevy_57l_engines.aspx 

[305chevy c-10]

these are nice heads ...i just bought a pair ch350e ........looking for an intake to work with them .......mine uses pre 86 style

[eventhorizon66]

Cast in Australia by Toowoomba Metal Technologies

Problem is AFAIK they are a vortec port and so require a vortec specific intake which makes the old style bolt pattern a bit puzzling to me.

Here's the best price I can find on them:

http://cgi.ebay.com/ebaymotors/CHEVROLET-5-7L-350-CYLINDER-HEAD-170CC-64CC-69-86-SBC-/140477618221?pt=Motors_Car_Truck_Parts_Accessories&hash=item20b51e582d

[305chevy c-10]

yep these are the ones i brought .......great for 260 bucks shipped

[walkintall]

where did you order the heads from?