I just dropped a b18c into my 89 4dr civic can someone plz tell me all the upgrades that i can get and im talkin about all of them.

Denso Plugs 50
Magnacore Wires 100
DC 421 Headers 300
AEBS Intake Mainfold 150
hondata Gasket 60
Catback exhaust (you may need to go get one custom made to fit with the engine swap) 300+
JDM ITR cams 650
Exedy clutch and flywheel 600+(depending on which clutch you get)

You may also want to replace all the belts if you haven't already, especially timing!

that will be a very good start. but if you truly have 10 g like you've said on some other posts and want ridiculous power. pull the motor back out, get it sleeved with lower compression pistons and rods and buy/make a nice turbo set up.

Denso Plugs 50 -- poop get NGK
Magnacore Wires 100 -- see above
DC 421 Headers 300 -- meh
AEBS Intake Mainfold 150 -- is this a GSR or ITR?
hondata Gasket 60 -- up to you
Catback exhaust (you may need to go get one custom made to fit with the engine swap) 300+ - always good idea
JDM ITR cams 650 -- might already have them
Exedy clutch and flywheel 600+(depending on which clutch you get) - another good thing do

You may also want to replace all the belts if you haven't already, especially timing! Oil water pump etc.

that will be a very good start. but if you truly have 10 g like you've said on some other posts and want ridiculous power. pull the motor back out, get it sleeved with lower compression pistons and rods and buy/make a nice turbo set up.
I went along and added lil to your post mostly good info though.

for the header have fun alot will need a new X member I love full races and short of hammering most wont fit as is if you retained your A/C be ready for lots of hammering hahah trust me...

OK what about cam gears and all that

Denso Plugs 50
Magnacore Wires 100
DC 421 Headers 300
AEBS Intake Mainfold 150
hondata Gasket 60
Catback exhaust (you may need to go get one custom made to fit with the engine swap) 300+
JDM ITR cams 650
Exedy clutch and flywheel 600+(depending on which clutch you get)

You may also want to replace all the belts if you haven't already, especially timing!

that will be a very good start. but if you truly have 10 g like you've said on some other posts and want ridiculous power. pull the motor back out, get it sleeved with lower compression pistons and rods and buy/make a nice turbo set up.

you dont need denso plugs, dont do shit. you dont need magna core wires, they dont do shit either, get some oem from honda. everything else is good.

im hoping you changed the timing belt and water pump before you dropped that motor in. the best thing i would get would be cams, intake mani, bored out tb, i/h/e, adjustable fpr. thats about all you can get before having to mess with internals