how big of a pain will this be ??

 

How much money do you have? (rhetorical)

 

It's not the easiest swap out there, but if you have some mechanical experience it's really not that bad. I found the hardest part to be the wiring, not so much hard as it was just really time consuming. I wanted it to look nice so I opened up the civic harness and hid the new wires. But seeing as you have a Si, that's a few less wires to add then most have to deal with.

Any specific questions?

 

yea would i have to trow on prelude parts after i was done what would i relly have to replace i know a bit but some thangs im not sure about

 

The only prelude parts you would need are for the drivetrain. Like clutch, flywheel, and anything engine related. Aside from that the only prelude part you'll have is the shifter assembly. You'll need a set of mounts and axles, which can be anywhere from ~$300 to nearly $1k if you buy HASport at full price.

You need to either trim the passenger mount or remove it depending on what kit you buy, if you have the HASport EGH2 and the optional JDM LSD tranny, you'll need to notch the frame slightly, and you'll need to cut holes for the shifter assembly and the shifter cables. The rest is a bolt in affair. Once you have it all done, you'll need to get the exhaust fixed as the stock prelude downpipe is much longer than the civic's so it'll have to be fixed. Nothing else has to be changed, but it's nice to change some other stuff.