325i into 318is

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Hi there im sure it has been coverd before many times but can somone point me in the right direction of a how to guide please ive looked in search but nothing compleate any help would be greate

[Sanchez]

http://www.e30zone.net/e30zonewiki/inde ... Swap_-_M20

[spark-plug]

Also ive been told that i can fit the 325i to my 318is what lsd ratio would be recomended? looking for a fun fast road/track car but still somthing that i can drive too the track without doing 4500 revs at 70

[spark-plug]

thank u sanchez im a fool

[Sanchez]

3.91

[spark-plug]

Ideal ok can i use my 318is rad or should i go with what the consenses is of going for the e36 rad will be for a rebuild 325i with arp head bolts and rod bolts boosted to around 300bhp

[Sanchez]

Bigger rad the better especially for the track. E30 one with be fine you dont have to go e36.

What engine upgrades are you doing?

[spark-plug]

Im curently restoring the shell just finished all the welding taking the engine out this week. got a striped 325i engine that im taking down to my local engine builder tomoro to get a price on a full rebuild and have been told that with ARP headbolts and rod bolts and sutible headgsget are fine up to 500 bhp but looking for a safe relible 300. Not keen on the turbo side of things due to the lag factor so planing on going rotrex instead but will do that in the summer want the engine in and running first any advice would be mutch apreated like does the m20 bolt straght up to the 318is box presumably with the m20 clutch and fly no modification required? and is there any disadvanteges to that box with the right diff obvisly like this one-

http://www.ebay.co.uk/itm/Bmw-E30-Lsd-L ... 4ac451e802

? thank u