depends on what you want the car for, a street car? street car/race car? it all depends on the purpose of the car, but do reserch before you start. As a old wise man once said to me.....

'To fail to plan, is to plan to fail!'

talk to our member old_school. He's suffering big time with the tightasses in the WA transport, and engineers.

well your F#cked then arent you
what if its an a12 and your brake conversion is not engineered, same deal
im going ca and im going to jump through all the hoops and get it engineered
its less weight in front than an sr and your already increasing the weight on the front a fair bit
moving batt to boot will get a lot of that back though
dazza

and what happens if he was speeding and hit ur car? or mabe ur kids.. or wife..

dnt think u get much money from him then, after sumone looks at his car and goes wow this is a sr20det not a sr20de have a fun life in jail,, GOT SOAP

because after its regod you can slip the whizzer back on :)

your car is more front heavy and your slower....wait they arent good things at all

so whats the advantage of the sr20de over the ca18det?

i think its pritty standard for most of australia but im not 100% sure but u can most likey have the sr20de or the ca18det
i just got my ute with the ca18det and i kinda wish i wen with the sr though.. so much wheel spin the sr would probly flog it in a drag at the traffic lights to 80 but just depends on what you want

ok you have all heard this before... whats the best for legalities in WA?

i want the car engineered..... and i am looking for either a sr20 or a ca18 and can i go turbo on a sr20 and still be legal? and what about ca18?