[D041987]

You are stock 6 speed manual.... That tranny will grenade at around 450-500WTRQ if you want to do any sort of launching... It will hold up to roll racing though. Also the 6 speed has beefier shafts 36mm I believe, so they are the same as the 335i already. The N20/N26 Auto boys have 32mm shafts which are weaker then the 335i (36mm).

As for fueling, the HPFP will get you soo far. If you want to run any sort of blends of E85 I would just go with Port Injection and upgrade the LPFP and have any sort of fuel you want with the ability to swap out injector sizes etc.

As for turbo. It's a shame you are building the motor but not the turbo... Spend the extra money and get a manifold, downpipe and the boost pipe done and call it a day rather then trying to cut and weld other turbos to fit...

Also for your clutch, I would strongly suggest you get the 335I NON SSA Pressure Plate and get yourself a puck clutch otherwise you will be going through clutches every year.

If you do decide to upgrade the trans:
F30 335I Shift arm (Holds the shifter assembly from the trans to the chassis)
F30 Gear shift selector rod.
E90/E92 335I N54 trans (6 Bolt flywheel version)
N54 (6 bolt) DKM Twin disk clutch/ flywheel combo.
Auto or the Manual 335I drive shaft from an F30 car.
F30 335I Factory LSD (3.15 Ratio) or Manual 335i diff (3.25 Open carrier). The ratio wont make any noticeable change in rpm or speed as it's too small of a difference. But higher ratio will get you a more peppier car.