this is the main problem , alot of ppl mistook a/r as the thing to see the turbo
a/r is just a ratio of the turbo compressor housing, the fin inside is the one that determine the CFM air flow of the turbo , and the turbine housing and blade determines ur power range.
here is a picture of the t04e housings that u r talking about
http://www.mjmturbos.com/images/T04E60507060.jpg
but the fin inside can vary
this is one turbo
300-500hp , 0.60 housing
http://www.mjmturbos.com/images/T3-T44inch.jpg
this is also one
0.60
http://www.mjmturbos.com/images/T045860 copy.jpg
this on is to diffrentiate t04s , t04b , t04e
=| Insatiable need for speed |=
u see the housing sizes, bt do u know that although a t04b is smaller than a t04e housing, bt a t04b with a 60-1 compressor fin has more cfm than a 46trim t04e. hehe confusing ?
this is another .60
iNSATIABLE NEED FOR SPEED
so saying , by telling its t04e 0.60 , cant really tell the hp
bt can say 300-500hp , thts the range
with the exact trim of the compressor fin, we can read from the compressor map n tell the real expected power at certain boost level.