That's a completely loaded question. With the 3.2s, you can stroke them to 4.2 and give them all forged internals, open up the heads, change the cams, bump up the compression to close to 11:1, add a few bolt ons, and get 340hp plus out of them naturally aspirated. I've read articles where the Noble M500s (which run the same engine) in the twin-turbo config get as much as 700-800hp. ABSURD!!!
What's WORSE is that the dayum things don't have a real redline. I've dropped mine to 3rd on the expressway and carried it up to 115mph in
3rd gear!
Still think your 626 wants to line up with one of these?
James E.