What Tom said.
You could just have paid $75 for a RLIM and it's a bolt on LIM.
Also on top of that even the early SVT LIM was larger then the stock head inlets. So going any bigger is not going to garner any gains because the head inlets are the bottle neck. (i.e. nasty lip - think about it for second

)
That's why the 99+ SVT's had both head ports EH'd to match the larger LIM.
