With only a few more days left in EST's sale, I want to buy a dp either from them or IPD. My question is: who has either and is it worth spending the extra $200 on IPD's "mental monolith 3-way catalytic converter" and the quality that come with IPD products, or does the EST dp do a comparable job (ie workmanship, quality) and I should think smart and save $$$. Help me please!
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