It turns out working over a leanburn cc to the hemi will cost me a handfull that I could've spent somewhere else guys; talking in the $1k range just for this precision job on the curvature and all.

Now onward to plan B; the 1st gen escorts over here with the HO series cvh motor was a 1.9L hemi combustion chamber. I don't believe this will be too far off internally with the piston squish and all, and any numbers off say CR can be tweaked with elsewhere.

I can get one built up with a 3angle valve grind, probably 15 45 30 degree, which will help with the flow. If I'm not mistaken, the 1.9L hemi's valves aren't too far off in size from the SPIs, which was one of the main things that concerned me. I should be able to bolt in my camshaft positioning sensor in the 1.9L hemi head (the 1st gens didnt have this angle pickup, located where the mechanical fuel pump drive was located, past cyl4 stuff on the head)

I can grab 2.3L double valve springs for cheap and integrate them; the only thing is, I do not know which cam profile I should run with. I am probably thinking of having a cvh35 grind shipped over since I think this will be the closest match to my setup, since the majority of the cam grinds over here (crane, comp, etc) are based around the lean-burn architecture.

The 2.0L SPI cvh has twice the counterweights on the crankshaft than the 1.9L SEFI. I mostlikely can have some of the weight taken off to keep some of the reciprocating mass of the heavier crank and bring out some revablility, then have it balanced.

I can have custom forged pistons made around some type of h-section conrod which we're still trying to workout.

Thanks for the help!
-brad