Magnaflow 99204HM on '99 Manual Transmission

Wondering if anyone here other than Walsted has tried this cat on a '99 with a manual transmission? I ask because the Magnaflow website designates that it is for the automatic transmission version of the car only, with no option for a manual transmission version (http://www.car-sound.com/02product/d...versal=99204HM). Which seems like an obvious mistake, but I don't know.

Why wouldn't a universal/weld-in version work on a manual transmission version of the car?

Thanks,

-Tim