[Hennessey]

i know its not the best BMW to have but im 20 years old so i cant get insured on a more powerful one
i have a 09 E90LCI SE... i was wondering if anyone knew of any good places to get aftermarket engine parts from, I.e induction kits, a selection Exhaust systems (not load ones as i know its just a diesel). im in the UK and i have done a few things the the car body wise, i got the parts from schmiedmann and bimmian but i cant seem to find any engine stuff. i understand that this is probably due to it only being the 318D model but i really want to upgrade it.
can anyone help?
one day i will work my way up to an 335I or M3 but for now im stuck with the 318d