dallasp438
Newbie
My 96 came with a single core 34x17 1/4 and is the same width as the dual core I replaced it with. No cutting was needed.
Maybe that was an earlier TBI thing.
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if you still have a core support that has these embossed pieces jutting out then you don't have the max air flow to the factory HD Rad. I have a 98 gmc c1500 with factory HD cooling & it has the embossed pieces removed.
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In the 2nd pic gives a rough outline where you should trim to get the proper size opening for HD air flow. Just follow the embossed line to trim. Easy right LOL.
GM done this in their infinite wisdom so don't blame the messenger LOL.