Not sure if you realize the outer holes are where the injectors fit. The only bolt holes are between the ports - either side.
As far as supercharging this, it was an option when I began 3 years ago.... but one of my searches found a boosted one that may have caused liner shift @ about 400hp. Remember the cylinder liners fit into the block, and it is an open deck, so there isn't a great deal of rigidity.
This engine is nothing like a Chrysler 426 hemi, those ports were made for 2 things: NASCAR, and a 6-71 blower. The 5V-EU has high speed ports, quite a bit smaller, in fact they may (likely will be) my limiter on power. I expect (do to port size) that I'll have a nice torque curve based on intake charge air speed, but I'm having doubts of making 300hp(260whp). Originally the 5V made 190PS, so 187hp. Compression is roughly 10.7:, up from 8:1, cam duration @ .050" went from 182, to 218. Cam lift was .240", and is now .303" Multiply by 1.4 for valve lift. So all the ingredients are there.....
Having grown up in the 60s/70s, and getting my license in 1976, I always liked the Pony car class, Muscle cars were also cool, but I always preferred the smaller Pony cars. I owned a 66 Shelby GT350-H at one time..... So I'm making the only VX22 in existence - a 2 door coupe with distinct styling that would make a great Pony car with a small block Hemi V8. Well that's the plan........
Engine is now assembled.