depends on what kind of mods u planning to do.... if u r on budget 4g13/15 has abundant parts and economical.... whereas 4g93 DOHC it will be a bit difficult to maintain because well it has twin cam.... cam will sure be expensive if u were to upgrade it and u have more valve spring and valve... if u wan power and dont mind spending money go for 4g63t if u wan power to be on ur side... if N/A i dun see why not....