SR20 turbo exhaust on a 240 that still has a KA24 (before getting the SR swap)?

[JoHn E]

if i have a 240sx that still has a KA24 in it...


and if i dont get the SR20 swap until later
and for some reason i can get a turbo exhaust system that is made just for the SR20
(the HKS hi-power for the SR20)
http://www.hksusa.com/sr20det

is everything good or are problems going to come up?
(if i put that sr20 turbo exhaust system on a 240 that is still running on a KA24)
before doing the SR20 swap

you might ask why im not waiting to get the swap first but i can get the sr20 turbo exhaust now for cheap
from what i seen from searching the thing thats different is the diameter
how would it run on a nonturbo KA24 240sx ?