if you want the car to haul ass you go the ca18det.. a lil bit tricky to fit but will be worth while it has been done it alot of cars around the same weight and they went very hard.. liek the lil datto 1200's .... you will need to get the ca18 gearbox or an adaptor/bellhousing to fit onto your celica gearbox and adapt to the motor bit opf money to send but will eb worth it int he end.. if you are starting from scratch why not.. is the 2tg efi? if it is you mayas well rebuild that and turbo it cause it will go predyd hard with that to