I'm about to order a new radiator for my 69 vert (m code, manual trans, no A/C). I am going to order a 3 row aluminum with 1" tubes. Should I go with a 24" (width) or the stock 20"? It looks like either one will bolt in with no issues. With the 24" I will simply have to remove the block off plate that restricts the size of the opening. Anyone have experience with this?