exhaust housing interchange question, help!
 

we goofed on our t3 turbo's exhaust housing while heating it to try to get a stuck bolt out...cracked the housing so we need to get another one. Here's the quandry we're at. it's a .48 a/r housing...and we can get a .63 a/r housing super cheap that will work. do we only need to swap housings or do we also need to get the exhaust impeller too? We only found the housing itself and not the impeller so basically if we NEED the impeller too then it's not worth it IMO...

thanks guys!