Dunno about "reputable", but I've got 2 alu Kennedys, and they're good enough (I got them VERY cheap --"shop soiled"). I'd even go so far as to say that they're definitely race-worthy, but I wouldn't spend a bucket on one unless I was getting a custom jobby. I'm sure it'll do what you want, and I reckon they're no worse than any of the other bazillion TIG alu frames out there. Mine are 58cm, and weigh about 1520g without a fork.

I don't ride them all that much because they're full Dedacciai 7003 alu, and therefore obviously not as comfy as my steel bikes. Having said that, I'm rebuiliding one of them at the moment with a cheap carbon/alu Roselli fork and 9 speed DA, so I plan on riding it a lot more in the slushy Melbourne winter.

Kennedy's shop is my 3rd port all call when I need something, so I go there semi-regularly.

As far as I know (and I could be wrong), Kennedy has two types of frames: 1) cheap, factory, alu imports for 'normal' shaped people who don't wanna spend much (which is what mine are), and 2) custom jobs that are made locally.

John is a big fan of slightly relaxed head tubes, for stability, and he REALLY loves longish chain stays, claiming that the current 395mm to 400mm chain stay fashion is totally shit for comfort and proper chain line.

SO......there's a slight chance the frame you're looking at could've been a custom job for someone with weird dimensions, so measure it up good to make sure it'll suit ya

I assume it's second hand?

How much are you gunna spend on it?