so the Y pipe finally rusted through on my 400 '74 Newport sedan. I'm struggling with getting an all new exhaust, Probably going to be a dual system because I'd like to get an aluminum top end and possibly bore/stroke the engine a bit. I have no time frame on when I'll do that though. The other option is to have a local shop re-make the pipe and nurse the current system on another year until I decide to pull the trigger on the dual system. I know the mantra "buy once cry once" but I'd really like to sit down and design the new system and do research on headers/pipes/etc before I go there. your thoughts? Not that it probably matters, but this is a daily driver that I'd like to eventually throw EFI on to save a buck on gas.