just noticed this post and thought i would mention a few things.

A m3 isnt the most aerodynamic cars for a start, and at around 290bhp they will never in a million years do 180mph even on the motorway.

Now i dont know the exact co of a e36 but if we assume its at best matching a saph

Now if we assume that we go for a supercharger like your suggestion and not a turbo, are you aware of any charger kits that will convert a stock m3 engine into a 750bhp engine because im not.

Superchargers dont give free energy, they steal energy from the crank to turn unlike a turbo which just uses exhaust gases by way of restriction.

Now i know of a couple of turbod m3s pushing up to 600bhp but they had to rebuild the internals because

a) the engine was to high comp for enough boost to be used
b) they cracked pistons and the rods werent deemed strong enough.

Now since a supercharger needs power to make power compared to a turbo, i doubt theres a kit that will make that power, and even if there is, i dont think the engine would hold together going on other peoples experiences.

Now if we strip away some of the stuff that isnt needed, ok we dont need super suspension, set of second hand coilovers for £400 i bet could be found, no need for a cage

so say we get a car for 3k
custom build a turbocharger kit(rhd steering gets in the way) since theres 6 collectors thats not gonna be cheap, including downpipe and wastegate attached your not looking any change out of 2k
6x 750cc fuel injectors £300
2 fuel pumps £200
fuel pressure reg £100
id imagine you would need a diesel diff so say secondhand £100
now rods and pistons would be £1k

Since this is race gas and lag isnt an issue we need to hit 750bhp, to save money leave the head inc cams stock and just make the power with more boost, hence going for a 900bhp turbo is best so it doesnt go out of its effiecency range when you turning the boost up trying to get the power, something like a gt4294 or a borgwarner s472

that puts me up to £6700

now management id say something like omex kit for £500 then wire that in

now you have to cover all the parts of the engine build, uprated headgasket, id go copper customer one from ferriday engineering for £100, then you need all the bearings, most of them come with the rods but mains etc dont.

Id say it could be done for a budget of 10k but would be done totally different than what your thinking.

Buying a car 3k, spending another £700 on stuff not in the engine bay.

That leaves £6700 to go from 290bhp to 750bhp, thats asking alot, i havent included any labour charges yet if you had to pay for someone to build the engine.

Thats a bit long winded but thought id give you an insight, its not as easy as you make it, yes you could do it with a e36 m3 and maybe just in budget, but its alot harder than my way.


And on the evo part( i assume number 4) ask mark shead what a 800bhp engine will cost, dont think he will build it for 6k, and sort all the fueling and ecu included do you. evo interior would give you £300 tops towards it.