Working on cars is a learning experience, but you don't want to take on a project to big and technical that you wont b able to finish. If you are mechanically minded, there are many info pages on here to help as well as the people on here that have already done the CA conversion. Read through the info and you will see lots of different setups when it comes to brakes and diff. You may even want a larger fuel tank out of an r31. If you want a name and a number of a guy in Brisbane that can supply you with the engine n gearbox crossmembers, modified wiring loom, brackets for 120y struts to s13 brakes etc. send me a pm and i will give you his details. If you want one within a couple of weeks i suggest looking on carsales and getting one thats has already been converted.