15K budget is quite healthy. But I'm talking about a Proton, not sure about Honda. For a Proton you probably could get :
1. Forged pistons and conrods, oversized valves and springs
2. stroker kit
3. rebored and resleeved block
4. port and polish
5. complete balancing and blueprint
6. engine lightening
7. cam shafts
I'm not sure if there'll be enough to turbo the car after that. LOL I guess the alternative would be to straight go turbo with upgraded pistons, fueling, engine management and the turbo kit itself. Prob will have to be 2nd hand though (the turbo and management)
Then B18C transplant itself could have cost the price.more or less,15k
U mean the 2' 15" Subaru and EVO at Sepang...?? Haha...ive crossed path to work daily with few NA monsters......... also using the same NKVE or NPE highway would be few daily driven boosted beast (both turbo from factory and bolt-ons rides)....... some made me go like.........DAMNNNNNNN..... thats nice....... and some would be just plain-jane looking but during WOT, transformed to be a scary monster...... which is nice also in its own style.... some looks really fast even when the are parked....
also worth mentioning the failed projects, and few misconceptions of creations on the road ......hahahaha but thats my daily view and im loving it.....
to me, (just to me) honda should always be in its NA state...... properly tuned, it will demolished lap times created by boosted cars......
hondata yummy-ness!for 15k....
id go for a B18C GSR transplant... can get about 10k
balance 5k use for brakes, rims, suspension and tires if ur still using stock items... but if u already have all those... then the 5k can use for cams, hondata, intake manifold etc etc