273 to Slant Six Conversion?

Hey All,

I've got a '66 GT that I'm looking to swap out the factory 273 with a 60-70's 225. I know you can convert the slant six k member to a small block but how does it work in the reverse order?

So far, I've only planned on getting the slant six and matching 904 and a different radiator. Ideally I'll find one with an etire k frame. Would that pretty much be all that I need to swap?

The car has power steering but I'm giong to change that over to a manual box at the same time.

The end game is to boost the slant six so I'm not totally crazy!

Thanks all!