1- get a engine rebuild. My current rb20det has done 180,000km. Now, if it was a naturally aspirated car, it would be alright. But tubrocharged engines wear much quicker than NA engines. I can get this done for about $2500- $3000. If i do this, i wont have much money left, and wont be able to buy a aftermarket turbo. So if i do get this, i will only most likely get a r33 turbo since it bolts straight on to a rb20det.
2- Get a turbo performance package. Ill buy a turbo for about 1.5k - 2k. I will also get minor performance mods, such as cams, bigger intercooler, cold air intake etc...
3- get a rb25det. The block will cost me anywhere between 1k-2k + installation costs. Ill also need to get a new gearbox...(do i?)
what is the best option for a good performance boost and reliability? what do you think about this?
Thanks.
PS: I heard that if you put a cold air intake into your turbo car, it will flutter. True or false?