i have a 95 dx with a d15. i am thinking of doing a swap but am hearing good things about the gsr engines and the h22-a1 engines from 93-95 prelude si model. what should i do ? what would be more worth the money and by the way how much would either one cost. it would be a big help. also i am thiking of getting and msd sci-l ignition. is it worth it for $279. heard it improves gas mileage, hp, and some tourque. what do you think.