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105 Posts
Discussion Starter · #1 ·
I have a b21a1 91 Si Automatic. I threw a rod and busted the block.
My Plans are to do a manual Swap with a rebuilt B20 or B21.

I need to know all the detailed steps on an automatic to manual swap.
Please Help

Are the Tranny Mounts the Same?
Do you Remove the A/T Computer?
All that sort of Stuff.

I also want to use the b20.
is there a difference to which i head i use? Does one have more power?
Are the ECU's The same between b20's and b21's?

Please answer some of my questions
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