just got a 90 civic wagovan and would like to know if anyone makes a aftermarket exhaust system for the wagon? or do i have to just buy one for a ef civic and extend it?

the piping on my wagon has 3 different size/section thats why i would like to get something new. any pics and details please. thanks...

 

Maybe best to just buy a ef/crx one and have it modded to fit the wagon since your in ca exhaust shops are plentyful