I agree with Mike. If you are going with a radically different clutch setup or putting gobs of power to it, chances are you're not using the stock bellhousing anyway. The locating dowels and factory tolerances should put you close enough that you'll never notice it. On the other hand, if it's something that's going to bother you every time you start it up, by all means, check it. It's a lot easier to do it now than later.
If your stock setup for some reason is out of tolerance,you can remove the dowel pins and install offset pins supplied by Lakewood.
Lakewood supplies them in different offsets to help you get your alignment within spec.
BTW the stock Ford FMS bellhousing with Tremec tranny on my setup was out of perfect by only .0025".
No need to mess with anything!
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