We could debate which block would sink faster on the end of a chain for anchors
i think a Starfire corona motor would beat them all in this debate
what i can gather - 4age - newer - revvier - more mods parts out there - but cant do much to increase capacity
2tg - older , torquier , can be stroked upwards to 2 litres with the right setup , the $age's older brother
Much in a muchness between the two - depeinding if you want cubes increase or peak revs .. Also 4ag's fit easier in corollas - 2tg's are better housed in early celicas ( bolt in )
outside of that - see the search field in the top right hand corner of this HTML screen - type 2tg or 4ag in there -clicketh SEARCH BUTTON - for it knows all, and prepare for information overload