Altima 99 modifications/tuning questions?

Alright, here is the deal i own 1999 Altima GXE and i like the car and dont want to get new one but would like to modify it, something more like a project thing. So if any of you have sugestions, to what could work better.

At this point before i get to paint and additional out side look modifications. Although i ve got new sound system : ). Anyway here is the question.

- What could i max out of engine that i have right now? and how much would it cost.

- I know i probably wont get much so i came up with an idea what if replace my enigine with Infinity J30 engine instead of my own its 210hp, would it fit my transmition or will i have to get new one, and what would fit as new transmition.

thats it, any other sugestions?

my suggestions...
dont take out the ka24de engine
you could easily find a turbo it that puts 260 to the wheels assuming you have a manual transmission. if you have an auto, then i recommend keeping it all motor.

anyways, since the 99 altima has been around some time it has a lot of aftermarket support.

CAI
CatBack
Turbo kit. i mean of course, you could build your own turbo set up. [ intake exhaust manifolds, turbo, intercooler, injectors, boost controller... etc.]

all of that without install would probably add up to 5500 beans.

260 HP to the wheels in such a light car [2800 lbs] with a factory installed LSD is going to have a lot of balls. a lot of people under estimate the 1st and 2nd generation altimas, but these cars can be made into good street racers without spending a ton of money.

you could piece together a turbo kit for the ka for about 2500 and most shops charge about a thousand for install. However if u have a higher milage ka i recomend swapping it with the FWD sr20det. I believe it came in the jdm nissan pulsar

i dont recommend swapping that engine into it, you have a FWD car, and the KA produces more low end torque, making it a better drag car, opposed to the sr20det engine, which is made for drifting, and good luck drifting in a FWD car. Just my opinion, not looking to start a fight

For reliability reasons i think that swapping to a factory turbo motor is better. I own a 00 and the engine is a little different. One thing is that the comp ratio is up to 9.2 i believe and its pointless to turbo it. Im swaping mine for an sr20det.

unless hes looking to run really high boost, he will be fine, the ka24de is built to handle 400hp on stock internals