I would think the Hilborne would be better with individual runners all the same as apposed to a plenum. Tuning stack length is easier then filling the plenum. I have never used a toilet set up so I have no accurate details to compare to. But most sprint cars use this style of injection. I have seen the other type used in more unlimited class's like the oswego style super mods and the outlaw offset super's as well but they had simple engine rules like " only 1 engine allowed" run what ya brung.
Enough time and money will almost make any set up work.
Real Race Cars Don't Have Doors