hmf or curtis sparks full exhaust for 300ex

[tdw0628]

i am looking for either a full hmf or full curtis sparks x4 for my 300ex thanks

[sparks427]

i have a sparks x-4 exhaust on my 300 w/ a jet kit, i dont remember what size they are but their not much bigger then the stock ones but i love the new pipe and its fully rebuildable and can get a silencer for it if need be. but i dont know about the hmf but there alot of ppl that talk about it on here if ya do a search then youlll find a ton of info.