They look as though they run under the bike, and here's the thing, they join at the back of the motor, so flow is improved over the standard siamese system. Thanks for reply and would appreciate any other comments.
Gavin You can't make a silk purse from a sow's ear.
There is not a snow flakes chance in hell that you could get these pipes to fit without a lot of butchery and swearing. The port height & angles will be so far out I doubt that you could even get the headders to fit into the colector and if yu did then there would be a lot of metalworking to get something to hold the pipes in