That's the one I'd get, for sure.

They used to make the 047 available on either lift... at the time I ordered mine, they 'could' have got the .550, but they had one .530 in stock and I was in a bit of a pinch - I wanted that 220/220 out before I left for that vacation where I was towing the trailer. (it didn't out in my favor, but that's the shipping company's fault)

I'm looking to do AFR 205 heads in the spring, and I'm considering swapping to the .550 lift version to run with the 1.89 rockers. (rockers will be going in regardless). I'd like to see how a bigger lift, small duration cam will work with a set of small port / high velocity heads...

I'm not sure if it'll be a cost effective upgrade for me: ~$200 for .020" lift? (1.8 rockers will give .562" with the 047, .583" with the 062)

Anyway.....

 

look further down you'll see the 007. it's a little smaller than the 047 with 1*more LSA same duration at .004. little less duration at .050. but also talk with roger or joe.
http://www.vincihighperformance.com/...%20LS1%202.htm