i just picked up an ls and i still need the harness and axles and some other odds and ends but i was wondering if i could use da b series axles in an ef with an ls

 

You HAVE to use DA axles when putting in a B series into an EF. They will fit in the hubs except if you are running STD or HF hubs as these are 20 splines and I believe the DX and SI are 21 splines.

Depending on which intermediate shaft it came with you will get a 90-93 or 94+ axles.

90-93 intermediate shaft has a female end on it and the 94+ has a male end.

As far as the wiring harness goes you should use the one that came with the car as no other harness will plug up to your cars stock underdash harness. This means you cannot use a LS engine harness with any of the EF underdash unless you want to splice and that just gets you in a deep hole quick.

 

all u need is

DA (91 to 93 integra manual) axles. NO AUTO.
female haftshaft (DA, of course) and NO AUTO again.
then ur good to go

 

thanks for the help and yeah its an si so i should be good and yeah ill just use the stock harness then,