20HP over what I have right now and you we are talking...

$500 sounds steep. For a little over half that I could EH mine again. IIRC Leo is running 330+ crank (N/A) with a slightly enlarged DH SVT upper manifold. So the stock manifold can make power.

2000 SVT #674 - Check it out!

Whoever coined the phrase; "If it ain't broke; don't fix it" ~ Just doesn't get it...