I think you can pick up that filter for around $30. There usted to be a company that would bore out the stock maf but I don't know if they are still in business, it can be done. I've seen where a couple of people have mentioned a 73mm for $125, thats a good deal. I ran one on my blown stock engine for a couple years.. it worked fine.
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Rick
My 89lx(updated 2/21/2001)
My 97 Cobra