Hello all, I've just purchased a 93 sol with a d16 and just have a couple questions. Being as this is my first honda I'm not exactly sure where to start with it. I guess the most important question I have regards engine parts, and if they are interchangable between the del sol and same model year civic? I'm looking at replacing the exhaust very shortly and since I like to buy used it would make my life a lot easier if I knew if a civic cat back will fit the sol. With regards to fuel, is there any gain from running premium or midgrade on this motor or is regular good enough (stock now, bpu's in the future)? Best plug to run is NGK or...? Is it worth my while to upgrade the plug wires with a stock distributor, or should I replace the whole assembly? Does the head respond well to port matching and a minor polish? Best header style to run for NA, 4-1 or 4-2-1? Any other tips or tricks you guys can pass on would be great too. Thanks!