Main cap girdles re-discussed

IF you had a PROPERLY designed and executed girdle, with a MATCHING set of PROPERLY designed caps, DESIGNED to interface with said girdle, then you could actually see structural improvement.

The problem with all of that, is no such off the shelf solution exists (to my knowledge anyway), and you will damn sure spend more having that stuff made, than just finding and spending the dough on a 4 bolt race block to begin with.

So, all the theory is moot. I could tell you how to design this properly but it ain't gonna be cheap to have made and therefore it's a fool's errand.