I have seen video of heavily modified srt car, he accelerated really fast from lights and other car was M3 I think that could not keep up at all, actually that srt car had lot of grip issues in 1st gear, then after he shifted 3rd gear it did broke down, can't remember if it was box or engine, hmm, I think it was this piston trough block issue that he got, but also I think that car had AWD so maybe it was not srt after all, my memory is not too good
I think he built much better engine after that, but never saw video from that.
Quite rare car that is then, no wonder we never got that here, only very few of those basic model Neons here that seem to be really low powered even engine is not so small.
I see you have there also Quaife diff, that is really nice unit, beats any other LSD solution in terms of grip (ok, electronically controlled active diff is better, but how many has one?), because more power is going to tire that has more grip, Audi has similar way working Torsen diff, best for racing those two, imo.