repair of motor m50

hello.
I cihan turkey
I have a non-VANOS M50 E34 520i
my vehicle engine to the renewal process

I want to increase the volume of the cylinder
I want to make, for example 2.8 or 3.0 liters

I need spare parts for this process, which will be

for example, 2.5 crank and 2.5 or 2, 8 cylinder head must
dimensions of the cylinder will be, but how many mm (84mm-86mm-87mm)
What will be the piston rods
result going to be change in the air flow meter
result going to be change in the idle valve
injectors, ECU, intake manifold change

Can you help me

my vehicle is a 1991 full model M50 engine
electric seats
sunroof
rear-curtain (manual)
4 glass electric
air conditioning
17inch m contour wheels
10 speakers and the original amp
headlights and fog wash
did no accident

fail english
sorry

The easiest way to do the engine modifications you want is to get a doner car from a crash and transfer the parts over. You would need so many parts to make a modified engine work it easier to get all the parts from one other car that you know worked. It is a very hard job no matter how you try to do it. Another suggestion is to simply sell your car and buy the one you want with the larger engine.

Ys, buy a crashed e36 328i and go from there