Rack and Pinion - one size fits all?

[funkyflynz]

Guys,

after some advice, im converting my Australian Valiant to rack and pinion, i know a subaru outback rack is the correct length for my application to help reduce bump steer.

My question is, would a rack from a 6cly outback with 205 tyres vehicle be ok for my v8 valiant (running a 6.1 hemi) with wider tyres (245)?

Im assuming the outback being 4wd and having a lot of its weight over the front wheels would have a reasonably decent rack?

Are there any concerns around racks and additional steering forces? Could i use a quick ratio Subaru WRX rack for instance?

Thanks

Lee