it is far enough to use a 2 to 1 connector but the cheapest I know of premade steel for motorcycles would be $100 each side and then the mufflers. http://www.burnsstainless.com
has some and even does custom orders. since most mufflers will cost you at least $50 your looking at 300 and in the range for new exausts anyway. Looks like it was a 4 into 4 with the slight upsweep of the inner pipe (maybe) so even with just mufflers you would run over 200 with universal megaphones but most likely it would work. http://www.coneeng.com/motorcycle_components.html
makes some that are much cheaper but require much more fab work.