got a few messages now with questions about intakes so thought I would post the info/pics here as I hope it might also help others with these heads (I am not scared to help/post info). For what ever reason there seems to be some misinformation out there that only aussie Copy intakes will work (which is NOT true) causing confusion, there are lots of different american 4V intakes that will work fine with some fill.
Originally when I was looking to buy a set of SM/PC heads I learned that these raised port castings had lots of extra material/thick in the ports for custom porting but was not really interested to get into any custom hand porting with any heads. Last year I seen a few different CNC ported versions by different companies, this is what I wanted/been looking for, for me today, CNC porting is the only way to go, basically with a bit of port matching I wanted bolt on and go. I bought the 280cc CNC Avenger heads complete for just over $1900 bucks ready to go setup for a .700 lift solid roller cam by FPS and the castings are very nice...
http://www.avengercylinderheads.com/catalog/16.html
Avenger_v2
Another CNC version I was looking at also was...
http://www.directmotion.com/dmmotorsports/index.php?cPath=51</a
the Avg cnc ported sm/pc heads have enough extra meat cast into them that they can easily be port matched for 351C 4V intakes by lifting any 4V type intakes up approx .125-.150 so the inside top of the ports line up, then just stuff/fill in the bottom of the intake to match the port floor like A3 intake ports. The stock 4V intake bolt holes basically line up and will work fine with a bit of ovaling. I was going to just cut out a aluminum sheet/spacer the shape of a gasket for each side and then use gaskets on both sides of it to make up the .125-.150 thickness. Going to also look into some other super thick teflon gasket options such as what Kasse has used with his intakes.
Ok So this pic is of a weiand 4V tunnel ram base on Avg cnc heads with no gaskets...
Now with the weiand 4V tunnel ram intake sitting about .125 higher
you should be able to see just a bit of the top of the Avg/cnc heads intake port in pic below, with a bit of port matching and a bit of fill on the bottom of the 4V intake you have a A3 port.
Anyway theres no issues using stock 4V type intakes/gaskets on these raised port cnc Avg heads with a spacer/gaskets. I have other info/pics I will post later of #9424 Ford motorsport intakes fitting these heads nicely and also the trick looking hand made SM/PC tig welded #3218 sheet aluminum intake on the heads too.