hi mate where u live..read ur post and it sounds interesting..anyway if u keen to do sr20 or rb20/25 i can recommend you 2 workshop nissan specialist...my fren has done his conversion rb25 into his E36...to be honest if u do conversion this mean u already disabled all special function u have in ur e46..but abs , traction control ( which is similar to the engine ECU spec ) will be working the same condition ( coz u change the whole set including braking system as well )..i would recommend u go for rb25..the engine might be expensive but u save on the maintenance ( if keep it stock )..rather than use old engine and put big turbine or whatever it will cost ur maintenance...what u need to do now is to make ur car as safety as possible, all the parts need to be in tip top condition...overhall, service etc need more money rather u spend ur money straight on modification..i tell u what..it is not worth...u can do ur modification later..that's how we play monster machine..not fun lah if u straight modified..the car also will have a big shock and die at the end...

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if u keen to get sr20det engine..go for black top..(if u can find one its rare )...the cost for this machine is around Rm10k without bodykit..if ur luck good, u can bargain less than RM6k..if with bodykit its around Rm14k ( u dont need bodykit anyway ) most of this machine has been installed with good gears such as HKS turbine etc..but need very good luck to get at cut shop ..like pisang goreng panas lah!
anyway on the subject of the cost to build this machine..u might need to save AT LEAST around rm15k to do such of this conversion including labour cost and changing part to the tiptop..
im not sure what engine u using now..2.0? 2.5? 2.8? 3.0?
if ur e46 machine now 2.5 > then why not go for original supercharge or turbo kit for this 6 potter? cost around Rm15k-20k with intercooler etc...also use original UDM machine wooohh..no need to modify ur engine mount also..future modification? u can go up to stage 3 bro!!also use management ECU...people respect lah...sure girls n all the guys also would say wallaweiii yeahaaa..

u know how's ur engine condition so u should know which one need to be done...
this is only my opinion..the decision is depends on urselve..if ur budget less than RM10k, then go for old engine..SR20det (pulsar GTR is the best) or RB20det ) with RB25 turbo + labour cost + tuning ONLY RM7k - RM9k...
GOOD luck mate..cheers..appologize if there is a wrong information..
take care..
