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Heads and Smog Pump Bracket

I have a 1980 F-150 with a 351m engine and I am planning on building a 408 Stroker using a 400m crank and .30 over pistons with an RV cam and roller rockers/lifters. I need to keep the CR in the range to where I can still used pump gas, and the biggest part, still retain emissions equipment.
My question is, are the bolt holes that hold the Smog/Air Pump brackets on the front of the heads all the same from Aussie, Cleveland and 351 &400 "M" type heads?
I am still trying to figure out which CR combination of heads/pistons/intake/cam to use during my build. I do not want a drag strip engine, but I also want have a very impressive HP/Torque range for towing and everyday driving. In Arizona, I still need to have Smog equipment in place for the inspection process.
Any suggestions will be helpful. I know there are a lot of top notch, well experienced that could help out. Thanks.
 
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