i need to know where i could find a exhaust for my 81 el tigre 6000? also if the earlier 440 exhaust would fit, or would a 5000 exhaust be more precise?

I dont know where you can get a pipe.
I do know that the exhaust on the 6000 and the 5000 is not the same.
Im not sure about the 440 exhaust

If you can swing it...why not buy a brand new set of twin pipes from Aaen Performance?

http://www.aaenperformance.com/VintagePipes.asp

yea i cannot swing that. not this year at least. im looking at max 300. not 500.