a good d15b kabli these days costs 80k along with ecu wiring and gearbox
rest you will need oil changes and swap cost and wiring cost ..which will differ ....... a normal swap like this should be done in 12k includes wiring and swap cost
stock down pipe is perfect and radiator and the stock axles will be used as well
second option if you want to keep your engine convert in into vtec ..not much of issue