Paul,
that's not too much to ask for.
As far as Combustion chambers volume,,,
I would use the small chamber head ( N/A) as to bump up the compression since you will want to run a lower static compression ratio later w/the turbo.
Some people here does not recommend useing the small chamber head,,, ,but I do & so does Larry AKA Twisted 6. We have used them in the real world of racing & just plain driving on the street ;-) I was very,very happy w/my results using the small chambered 194 cyl head.
Bosanovas cyl head has minmal head work done & look @ his stats for HP & torque,,pretty nice!
Depending on what kind of gas you can use ,look for a compression ratio of 8.5:1 to 9.2:1 range for a turbo application.
If you are going to have E-85 fuel 8.75:1-9.5:1 range approx,,all depends on what fuel you will use or what is available.
There will ba a lot of choices of parts,cams,lobe centerline,,big turbo, medium sized turbo,desent sized all around turbo etc.
I think we can help you along the way.
My old combo was a 250 L6 ,TRW forged flat top pistons w/4 valve reliefs.
I had 12.0:1 compression,w/194 head 220 psi cranking ,then later switched to a larger chamber head,opened up the chamber,sunk the valves a bit,& ended up w/8.4:1 compression & a Paxton supercharger on it..
So basically let us know what fuel you will be able to use & we can start w/your compression ratio & pistons to use.
MBHD
