i hear the q45 throttle body can b modified to fit the stock 280zx intke manifold. my question is by doing this, besides porting it, will i have to weld a tab on? is there a company that sells such a tab and by going to 82mm can i go to a 3" exhaust or shud i go bigger? smaller diameter? just dont wanna waste money. also any recomendations on headers and mufflers? i only found pacesetters or monza headers, and of course piping and mufflers are universal, i was thinking borla, let me know guys, thanks!!